I have mighties that I use all of the time. They are crazy strong, so much so that I would NOT rate them as a toy. If a little kid ate one, it would be an issue. I use these in my office, and in my school (high school). Kids love how strong they are, but if one is dropped, it will find the nearest thing to stick to, and may be hard to get off! I know one rater said that these barely hold a sheet of paper up, but I've been able to do a several pages with just one magnet without a problem at all. You can get one to stick to another through your hand. They are that strong.