The list author says: "These are, in my opinion, must haves for any backpacker. For most things, the cheaper, the better. So look around for the best prices. Assume that anything you take backpacking will get lost, broken, or be stolen, so don't pay too much for anything. For things that have to be expensive, get insurance and keep the receipt."
"You just need one that will hold all your stuff has a rain cover and is comfortable to carry. Don't pay too much for one. If it rips patch it.Besides most airlines will be happy to rip even the most expensive backpacks for you. No need to thank them."
"One of these, or just any disposable plastic spoon；though disposable spoons break easily. I don't know if you can take a plastic fork on a plane in your carry-on; so take a spoon or pick on up along the way. When traveling, the cheapest place to get food is the supermarket. It's very helpful is you have your silverware already."
"Comfortable shoes. Depending on where you plan to go, you might want to a pair of shoes that are waterproof or a pair that is breathable. Make sure to break them in before traveling. Many comfortable shoes are comfortable only after a couple months of wear. If you are going to walk over rocky terrain, get shoes with hard soles, like hiking boots."
"Make ramen, soup, coffee, or hot chocolate it in. It's great for food on the go when traveling. Many trains and buses have water kettles/boilers that you can use to make soup or coffee. But you have to have your own container."
"It's an easy meal or snack. Put it on bread, crackers, fruit, or just eat it by itself. You never know when you'll be stuck at a train station in the middle of nowhere with no access to food. Always have something in your pack to eat, just in case."
"Generic wipes are great! Use them to clean your hands, face, or a questionable looking spot to sit. They're great for TP, blowing your nose, or getting gum off your shoe. In a pinch, you can use it to take a "dry bath" or clean your spoon. Best of all, you can buy them anywhere!"
"Lock n Lock containers, or the equivalent are great for cameras and other expensive non-water proof items. They come in many shapes and sizes so you can find a good fit or almost anything. Keep important items in a lock n lock contain in case of a sudden rain fall or an accidental drop in water."
"NEVER GET A PASSPORT HOLDER!They are a waste of money. You have to take the passport out of the holder to get it stamped. The holder just makes to passport bigger and more conspicuous. You're better off with a zip-lock bag. At least then your passport is waterproof."