I use the cheapie blank stickers that are about 500 in a pack from WalMart for about $3. I think they are meant for use as garage sale price stickers????? Anyway, I have them in several different colors, shapes and sizes and use them all the time for keeping pieces, blocks and rows organized as I go. Saves a lot of time being sure something is in the right place before sewing....and knowing me, it also saves a lot of time ripping stuff apart that was put together wrong!