I made this magically-opening walnut for the Adult Swim mini-series “The Heart, She Holler.” It works in a way that is similar to the old springy toy animals made out of beads that droop when you press on their plastic base.
For my version, I made a new base out of plastic tube, springs, and washers. Next I carefully cut a walnut into quarters and made tiny wire hinges so that it would flop open when the spring was discreetly pressed. It is almost impossible to get the meat out of a walnut without breaking it, so I needed to epoxy mine back together!
Looked kinda freaky and gross
on the show.