Watchmaker cases - used
I have them in 33mm and 70mm. These were used to store Sterling Silver when I had a shopfront so some have stickers on them or residue from labels. They will clean up easily and can be used for storing your frits.
Originally made to store gems, watch movements and jeweller's findings, these glass-topped aluminium containers are ideal for organising seeds, beads, bugs, buttons and especially good for frits.