Smoke shop owners: are you buying glass for looks or for rotation?

A lot of shops overbuy pieces that look amazing but sit too long.

For B2B buying, I think the smarter move is simple:

Stock colorful glass that catches attention, but always balance it with fast-moving essentials like hand pipes, water pipes, bowls, bangers, grinders, and cleaning supplies.

A beautiful shelf is good.
A shelf that sells every week is better.

What category rotates fastest in your shop right now?