I recently uploaded a first holder for Keychains and similar for a shop I offer my stringart pieces. I quickly found out it's very annoying to get the hanger you want as I don't offer any similar looking ones so the process started to make it easier. 

Hooks!

The first Version is completly fine if you sell pieces that have the same design and colors so buyers don't need to take all from the stand to get to the one they liked.

And yes, now I only redesigned the same stand only with hooks. This way you can only hang as many pieces as hooks are available.

If you want to engrave as well, I can sugegst using the reference settings to make a test and then adjust mostly the power a bit higher.

This holder is very easy to assemble. Just slide the 2 holder pieces together and stick them onto the round baseplate. 

As you can see you don't really need to use the round plate.