A metal that melts in hot water!
This non-toxic alloy will melt in hot tea or coffee (144°F).
Cut the bowl of a spoon from the handle and solder it back together with a tiny bit of this stuff, and watch as it falls apart as your victim stirs the coffee.
Make cast metal objects in plastic molds.
Use as a non-toxic substitute for liquid mercury (just warm it up).
One foot of 1/8 inch diameter wire.
