Here are a few things that we've been doing lately at Syrendell....
Painting wood spinning tops (Stockmar watercolors, then beeswax)
Making hanging stars from kite paper (tutorial at Bust magazine's blog: http://www.bust.com/blog/2009/12/23/busts-holiday-gift-to-you-we-made-a-diy-snowflake-tutorial-video.html)
Creating terrariums from moss that we found on our nature walks
Layering compost piles (more to come on this!)
Tissue-papering a winter scene in a door window
Making electic go-karts out of a kit from Steiner College bookstore
Cousins crocheting scarves