I have 50 old magnets but don't know what to do with them ...
i used little magnets to store iron screws of different size.
You can make a pocket game like the silly face board.
1. Find an old Altoids can.
2. Glue a piece of paper in the bottom of the Altoids can, and seal the edges with tape, use a 2"x3 1/4" piece of paper and draw a oval on it.
3. Put some Iron fillings in the Altoids can.
4. Put the magnets on the back and drag them around to make shapes.
I use old hard drive magnets sewn in the base of my shower curtain to prevent that awefull "cold shower curtain touching your legs" syndrome during a hot shower. :)
try this its fun link