Hamburg doesn't have a fabric district which is very disappoint for a designer who is looking to…read moreexpand her creativity. Out of all of the ones I been so far, Ernst's store carries more items you ever need. They have a wide selection of buttons, zippers, patterns for garments, trimmings, borders, and fabric diversity. The prices for some of this these can be pricey for an American who is use to purchasing from the NYC& LA fabric district. I won't pay 3 Euros for a 7 inch zipper or 1 Euro for your average button.
If you need special thread, I recommend Cohan in Altona.
If you need special beadings for a embroidery design on fabric, I don't recommend any store yet. I'm still searching for the one.