At a loss of what to do on a rainy or lazy day? It's simple - just create some fun chaos with the crap you have. It's easy. We do it a lot. Take your crap, scatter it all over and play with it. Simple, cheap & fun. No money spent on gas. No money spent going out and about. Just pure simple fun with the only cost being cleaning up said chaos.
And yes, sometimes we store toys in beer boxes. That's how pure white trash rolls.