Disturbing laboratory test tubes. Filled with bugs and bright not-liquid stuff. A.k.a., Jello bugs!
I needed a non-liquid alternative to colored water in test tubes for a mad-scientist display. Solution: jello.
Personal field testing revealed that regular jello will stand at room temperature (a pretty warm room) for just barely five days before it begins to get moldy. Plenty of time to gross-out small children without precipitating an unfortunate bio-hazard event.
This is terribly fun to do. Enjoy!