I just got back from a retreat a few weeks ago and the one thing that everyone forgot was a paper bag and a roll of tape for threads and snips. Luckily I brought enough for everyone............and it really made clean up much easier. Someone also had plastic bags for scraps from cutting. One lady in our guild uses these scraps for making dog beds for the local shelter. If you do happen to forget anything quilters all over are more than willing to share theirs with you. HAVE FUN!