I recently saw a YouTube video of where someone stuck finished flies into the rim of a styrofoam cup for safe keeping. i thought it was a pretty good idea until I tried it after tying size 20-24 midges. It's definitely an improvement over what I do where the flies are hung onto a stretched out coat hanger. Yes, there have been occasions when I have accidentally set the flies "free" when bumping into them. Would appreciate hearing what/how some of you store flies after finishing.