The money is a great idea, but I'd worry I'd spend it on the wrong things.

Mine has
-coloring books and crayons
-play dough
-DBT skills book
-a piece of rope from a beach that still smells like camp.
-a mirror I decorated with glass in grade 6.
-a variety of pamphlets and booklets on a lot of different self help stuff, because they're a good distraction for me.

I want to improve it though. It use to have stuff I shouldn't have put in there but I took it out and am working on rebuilding.

I'm thinking of putting my favourite TV shows in there, or at least a list of them.