I have a small package of plastic cows... 9 for $4.9. I bought them when i was at the Bunker house to put in a tiny scene. I'm glad I didn't, because I crushed the scene during moving, on purpose, because I didn't really like it. I learned just how strong plaster can be, and think next time, I'll mix in dryer lint and other fibers for reinforcement.
Anyway, these plastic cows are special. I can place one in a cup of water, microwave it for 5 minutes, and then I have 8 seconds to chuck it out of the microwave before it explodes into a full-sized cow.
We've lost quite a few microwaves due to forgetting about the cow.