Some thumbtacks are all you need to attach this fella to any wall. So far, I have hung a variety of hats and necklaces for the past few weeks. It's held up pretty well. The tacks are tilted back in the holes so they resist downward pulling force slightly, but I wouldn't go over like 2lbs.

You need two thumbtacks for the design to attach to the wall - mine are 15mm at the top

To assemble:

Place two thumbtacks into the circular divots in the base (big hexagon)

Insert the hook into the smaller hexagon

Insert the hook-small hexagon assembly into the big hexagon.

Attach to wall.

I have built in holes to make disassembly and combining colors easy.