Bags are a really good one to do as you can vary the amount of time they take and still end up with a good result. I have see ones where you provide pre cut squares of fabric which they then add how ever many decorative techniques - applique / stensil / tie dye / batique / what ever you have. This can then be sewn together and use or a wide tape as a handle or they can use more fabric. This is an excellent recycling one as they can use old bags or t-shirts / trousers - i have even see a laminate stitch ones using sweet wrappers sealed in laminate. This can be expanded where they design thier own shapped bags and do patterns. Bags give a really good finnish and very open to many different themevs. I think there is quite a bit of stuff on HELEN HUSPITH resources site. All i have is paper based from schools, so I haven't got an electronic copy to send, but I can look Hope this helps. Other ideas I have seen includes cushions, fleece hats and shorts.