I use pins with letters glued to them. Went looking for the flower pins but refuse to pay the price I found them at so made my own using baby bracelet beads and straight pins with the yellow balls on the ends. I stuck them upsidedown on my ironing board with a letter threaded thru them and added a drop of non washable Elmer's Glue. Let them dry and you're good to go. While making a bargello quilt they came in handy keeping the rows in order. I made 8 sets of these pins and have given a few out as I doubt I'll ever need 8 sets. Got the beads and extra pins at WalMart for about an 8th the price they wanted for the flower pins.