The Terrariums got really old really fast. The plant sprouted… then immediately died and rotted… every time. You could open it up about twice before the plastic cracked, and the top wouldn’t stay on after that.
The toys from Super Sugar Crisp were the best. Had several of the little “bowling ball swing” toys. (they were more honest in cereal names back then too) And the bike reflector thing was actually something useful. I seem to recall getting bike license plates from some cereal box as well (actual metal plate)