This is a simple (sort of) rigid body physics engine with a few random objects I thought of. All you have to do is click the green flag! If you click the green flag a few times then the results can be different.
This is a slightly improved version of @antiquark 's ball physics engine. Give him credit if you use this! Tag song! ♫ #rigid ♫ ♫ #body ♫ ♫ #physics ♫ If this song makes any sense then you probably aren't doing it right.