I think my Quatrefoil design lends itself perfectly to Christmas decorations and so, over the last year, have collected different ideas and shapes to make into tree (or bigger) decorations.  Here are some of them :

Christmas Stocking
Christmas Stocking
Square on the huh
Square on the huh
Small 6 part ball
Small 6 part ball
Large 6 part ball
Large 6 part ball
Pyramid
Pyramid
Bah Humbug
Bah Humbug
Biscornu
Biscornu
6 Part Trirec
6 Part Trirec