Yarn or Fabric

Here are some inspiration links for you...

star topper
http://www.artfire.com/modules.php?n...uct_id=2229919

birds nest - thanks Martha...
http://www.marthastewart.com/how-to/...rd-tree-topper

angel - instructions, no pics :(
http://www.ehow.com/how_11396_make-angel-tree.html

angel - with pic
http://www.christmaslightsanddecorat...e-toppers.aspx

another angel...
http://www.ehow.co.uk/how_6693723_di...ee-topper.html