Today, on EMS Labs, they run through some fun and even useful things you can do with magnets. And who doesn’t love magnets?
Make almost anything (ferromagnetic) into a building set
With magnets as connectors, you can build tins into anything you like. (Just be sure to get Bawls Mints, not Bawls Buzz).
Extract batteries from stubborn holders
We’ve all got things that take batteries. Some of them are well designed, and some of them are not. The worst offenders are electronic toys that take (say) half a dozen AA batteries, all of which must be inserted with the correct orientation– spring side first– and pried out, well, somehow. Rather than risk puncturing your batteries by prying them out with something pointy, just use a magnet to lift them out.