Or bolts, nails, screws, any small metal you want. The MagnoGrip has 3 small but powerful magnets. The outer covering is made of ballistic nylon, which is highly resistant to scratches, while the inner covering is made of felt.
You can order the MagnoGrip magnetic wristband at Amazon for $11 (USD); there’s also a pink-colored version but it’s more expensive. Get a whole bunch of these and you can pretend that you’re Magneto.
[via Cool Tools]