Like Mucky, I make floor quilts for babies to play on, and specifically tell the recipients that the quilt is not valuable, heirloom etc (usually I just use a panel and do some work around it). They are great for me to practise FMQ, and wonderful for mothers when they go visiting with the new baby. No need to worry about dust, dog/cat hair etc on the floor -- the baby has somewhere clean and safe to be on, and later to use inside the playpen to protect your home carpet from spills and accidents.