Can't think of anything not allowed except the Quilting Police. Bubba, our 80 pound dog, has his very own spot on the guest bed that occupies part of my sewing area and he likes to snooze up there when I'm working on a quilt. Sometimes he ends up snoozing on WIPs that have been stashed on the guest bed- but I figure that's what the lint roller is for LOL! I am careful to pick up fallen pins and needles immediately so he doesn't step on one- but being vigilant about that is worth it to me to be able to enjoy his company.
Rob