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Useless Box Kit - The Original Useless Box Kit, Also Known As the Useless Machine or Perpetual Machine, A Perfect fit for Geek Gifts Desk Toys or a Cool Gadgets Gift

4.0 out of 5 stars 107 customer reviews
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Price: $44.98 & FREE Shipping on orders over $49. Details
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Sold by thycellf LLC and Fulfilled by Amazon. Gift-wrap available.
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  • ENDLESS FUN: A totally useless box that provides endless fun! With this perpetual machine every time you flip the switch on, a little finger pops out and turns itself off!
  • EXCLUSIVE VERSION: Exclusive Red LED included. Make your box glow red! A professional looking but incredibly funny desk gadget, a desk novelty that won't be forgotten.
  • DIY KIT: The Black Do It Yourself Useless Box Kit does not come assembled. A great geek gift and soldering kit gift. Perfect as a cool teen gadget gift.
  • WHAT'S REQUIRED: Requires two (2) AA Batteries to run and a Soldering Iron to Assemble, both not included.
  • Search "Fully Assembled Useless Box" for a fully assembled version or our useless machine that even includes batteries!
2 new from $44.98
$44.98 & FREE Shipping on orders over $49. Details Only 1 left in stock. Sold by thycellf LLC and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Useless Box Kit - The Original Useless Box Kit, Also Known As the Useless Machine or Perpetual Machine, A Perfect fit for Geek Gifts Desk Toys or a Cool Gadgets Gift
  • +
  • J&L 60 Watts Soldering Iron, UL listed
  • +
  • SE MZ101B Helping Hand with Magnifying Glass
Total price: $59.42
Buy the selected items together


Product Description

Flip a switch and launch your very own nuclear attack with the Useless Box. Well, actually, turn the Useless Box on and this clever electromechanical box turns itself off. That's right, experience endless, useless fun with the Useless Box. Also known as the Useless Machine or Perpetual Machine. Every time you flip the switch on the Useless Box, a little finger pops out and turns itself off. Sure it's useless... but it keeps your itchy switch-flippin' fingers busy! The Useless Box Kit does NOT come assembled and requires a Soldering Iron to assemble it. Includes an attachable red LED so that you can make your Useless Box glow from the inside! A perfect fit if you are looking for Cool Gadgets, Geek Gifts, Desk Gadgets or Desk Toys. If you want the fully assembled version of the Useless Box, search "Fully Assembled Useless Box" on Amazon.

Product Information

Product Dimensions 9.9 x 5.5 x 2.6 inches
Item Weight 13.6 ounces
Shipping Weight 13.6 ounces (View shipping rates and policies)
ASIN B00B5AUXZQ
Best Sellers Rank #130,352 in Toys & Games (See Top 100 in Toys & Games)
#6,921 in Toys & Games > Novelty & Gag Toys
Customer Reviews
4.0 out of 5 stars 107 customer reviews

4.0 out of 5 stars

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

Top Customer Reviews

Verified Purchase
Electrical engineer here... The box gets a lot of attention sitting at the edge of my desk at work. The shiny black box with a switch on it seems to beckon people over.

The assembly of the plastic box is a pain. I don't know why they would use nuts and bolts to attach a plastic plate perpendicular to another. It takes four hands and some skill to assemble. When I was done the lid sat ajar, so I had to make a few adjustments. It stays together well enough, but does seem a little flimsy. When the arm retracted it would bounce against the switch in the bottom flexing the plastic piece that the motor is attached to. I fixed this by bending the metal tab on the switch up, so that the motor turns off sooner. The instructions are not a good step by step method. I found it easier to do things in a different order and there were a few things I had to guess at. It doesn't use much power, I suspect it will be a long time before I need to put new batteries in it. I am satisfied with the quality. I did have to use a utility knife to clean up the edge of one panel. I assembled this in a little over an hour on a day that I was stuck at home sick. If you have the tools and like a challenge I would recommend this kit. Some patience is required.

Tools used: jeweler's screwdriver set, needle nosed pliers, soldering iron, solder, utility knife, wire strippers (small)
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I had a lot of fun with this. It is a kit and you are supposed to put it together. I actually had fun with this weekend project that now sits on my desk and distracts me from work.
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Verified Purchase
Works as advertised! It's a do-it-yourself build, so keep that in mind... you absolutely need extra tools to set this up, including:
- a soldering gun
- wire strippers
- philips screwdriver

I was aware of this before I made this purchase, and I'm an electronics enthusiast, so I have all of these tools plus a lot more on-hand. I read some previous bad reviews where people were complaining about needing the extra tools, but it states in the description that these are necessary and not included. I bought this for my kids (all under the age of 5), and they love this thing! Once again, please be aware that extra tools are needed to put this together. I really don't think it's fair that this is getting bad reviews because people aren't reading the details of this product.
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Verified Purchase
I assempled the box and it worked fine, ONCE. After much tinkering I found the problem the board or switch is not working properly. I called the company Solarbotics and there tech. support dept. does not have a phone so you have to write the a detailed explanation of the problem. Whats the big deal replace the part and let me move on. Bad Company Policy. Finally it became garbage which is what it was from the beginning.
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Verified Purchase
The useless box arrived and within 10 minutes my 11yr old was excited to start putting it together. The directions for wiring the motor and switch were either backwards or I'm cross eyed, but once I figured out how to wire it everything else was easy as can be. I would guess even with the struggle wiring it (probably my fault) it still only took about 75 minutes to put together.

Everyone I show it to is REALLY hesitant to flip the switch thinking its going to explode, shock them, or worse. But once I get them to turn it on the smiles and laughs it creates are great.
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Verified Purchase
To say there is some assembly required is an understatement. There are 16 self taping screws that are really really tiny. And the box material isn't the strongest stuff. I managed to crack one piece. Top it off, you have 12 individual solder points to deal with. If you have never soldered before, I suggest watching a video for tips. It's not hard to do if you attach it the proper way.

Overall it is a cool conversation piece, and if you enjoy building something then you will like this a lot.
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Verified Purchase
I gave this as a gift to my brother and he loves it. We have seen these on line and wanted one, but never wanted to buy all the parts individually. This kit has everything and the quality looks good. We had the tools on hand and the instructions were clear enough that we didn’t have any problems getting it together. I think it took us less than an hour. We did have good quality tools and a basic understanding of electronics so that helped. Right now it sits on his desk at work and he says people are always coming up and asking about it. Recommended.
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Verified Purchase
I gave this to my son for Christmas. He hasn't built it yet, so I can't comment on how it works. But a friend of his was familiar with it, and said everyone loves it. My son was thrilled with the present itself and is looking forward to assembling it. He has a good soldering iron that he has used for working on RC equipment, so the soldering part will be fun and easy for him. And what guy doesn't like putting stuff together with little nuts and bolts. Can't say kid - he's over 40. But like his dad (me) he never grew up. I wish someone had gotten one of these for me.
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