J.H.
This is a lot of work and requires sewing, but have you considered a quilt? We did this for a friend, and each person made a square and then they were all sewn together. The squares were all cut from matching fabric, and there were guildelines (a theme), but basically everyone did it the way they wanted (embroydered, fabric paint, etc) and the finished product was very personal and unique. She loved it!