I have 4 classes rotating in and out of my classroom each day and I find myself constantly straightening up rows/groups. If not, by the end of the day, every group is smooshed up to the front of the room, the rows are all wiggle-wormy, etc. I've tried wrapping tape around the legs (it breaks). I thought I saw some velcro wraps at Really Good Stuff but I've never been able to find them since. I've considered having my husband buy some pipe big enough to fit the legs and cutting it into circles and placing the legs in those. I'm open to any ideas! The biggest challenge is that I rearrange the room a lot, depending on needs. Sometimes, rows work best, sometimes groups of 4/5, so I need something that I can change easily.