An agency my partner worked for did "Jumpers for Shelter" last year: employees hand-knitted or hand-accessorized a jumper, which was then auctioned along with some bling donated by clients (kitchen knives, computer games, jewellery). All money from the eBay auction went to Shelter.
http://en-gb.facebook.com/media/set/?set=a.175361102491973.4...