A simple wall-mounted holder for spray paint cans.
Needs no support if you orient it so the mounting plate is on the bottom as shown in the picture. Can hang on a 2x4 workbench for a can of wd-40 or similar.
Note that spray cans with a thick rim on the bottom will NOT fit, you have to scale up a bit to make room for it, but many spray cans like wd-40 fit perfectly.