There is an Al Rawnaq store near the Fabric Souq and the Abaya Souq that has LOADS of trims - more than you can possibly imagine.

To get there, park near Fanar (the Islamic Cultural Center) and walk down Al Tarbiya toward the end of the road (where it forms a T.. .not toward Souq Waqif). The Al Rawnaq is on your left-hand side.

If you have the Spring/Summer Marhaba guide, just look on page 206 at the Souq Map. Al Rawnaq is actually marked on the map.

Happy shopping - hope you don't spend too much!