Custom hangers
I noticed a thing in IKEA. It has holes to hang things on it. So I made myself some wire hangers. Each tool could use a special part like that. Just an idea.
Also made custom clothes hangers that fit in a crack above a door in wall closet. Quite handy. Especially when made from higher grade plastic. Material cost about 10 EUR for high grade. 2 EUR for normal. It takes me about 1h to design such a hanger / hook and it prints in 10 min.