Here is an even simpler version to hold leaders. When I take someone new fishing, and don't want to snell hooks all day, I pre-tie leaders for them. I go to the drug store, and get those clear inserts that guys use to hold pictures in their wallets. I put two pretied leaders in each slot. One of these holders will handle about a dozen leaders. All you do is wrap the line around 3 fingers, and secure the ends by tucking it back in to the loop. They fit great in your pocket, and they are cheap too. My $.02