This is too funny -- this site shows a Christmas wreath made from left over/spare/elderly computer parts, wired to a frame. There are no details of construction -- just the picture. But seriously, how hard could it be? And who among us does not have a few dozen spare printed circuit boards laying around?
I think I'll give this a try and impress my wife. She laments the fact that I see Christmas decorations as both pointless and wasteful.