I've been needing a storage system for my circular needles for years. I finally decided to make myself a needle roll. I couldn't find a pattern I liked online, but I generally based it on a needle roll I already have for shorter straight needles (I use it for my double points.) I used a vintage pillowcase I bought for 49 cents for the inside fabric, folding over one edge to make the pocket type flap and stitching elastic to it to hold the needles. Then I backed it with the cherry fabric, which was in my stash. After I finished it, I tweaked it by adding another flap of fabric (which velcros down) to keep the 16 inch circular needle more stable. It even sort of goes with my other existing needle roll (which was a gift from Jenny)!