Like everyone else, I have an assortment of containers and objects I use for my work, mostly housed in a big old tallboy which I got from a junkshop.
I also have accumulated masses of things I know will come in handy one day. I even have a container containing dozens of attractive feathers I've picked up on my walks, lots of nice stones and loads of shells, bits of driftwood. There isn't much room left to work any more. My grandson wandered in there during the Summer and we haven't found him yet. I'm sure he's OK, probably living off the unfinished sandwiches and stuff.
What I'd really like someone to invent is a studio which can be unfolded out into a much larger studio when required (I'm sure I saw Inspector Gadget using one once) Oh, and also one of those things that cleans and tidies it all up regularly....I think they are called a wife or something. The model I have (a mark 2 partner) is great around the house but just doesn't work at all in the studio for some reason.
Let me know if you come up with anything......