Ice release using that bread toaster thing

Hi, There are plenty of release methods out there, but this one just came to me on the train. If you have a bread-toasting device (not sure of the exact name) like … 781200.jpg, you can hang it from the ceiling using hooks, tape, or similar. Once suspended, place an ice cube inside (it opens up so you can drop one in and close it again), then rest a key on top of that ice cube. As the ice melts, the key drops down without getting caught anywhere. You could also tie a rope between the key and the device, though I’m not entirely certain if that would tangle. It’s quite similar to another ice release method (I can’t recall which one), but it should work fine:p