Where do you get items to build broom cabinet?

Blue chest gives nuts and bolts. Merge into handles, the merge again into hinges. Keep merging until you get a working broom cabinet which will drop towels and toothpaste. Merged towels become equipment (brooms, mops, sponges etc). Merged toothpaste becomes various detergents for cleaning. I think you need 5 brooms (level 11 item) so the cabinet is absolutely necessary - I have 2 and wish I had more!

Nuts and bolts, brass handles and hinges build the cleaning cabinet. Fancy blue chest drops these. If you wait until you have 2 blue chests you can merge them together first and then open it. You’ll get higher level item drops and more of them. Plus some surprises.