It's the last weekend before Christmas, if you are still doing your last minute gift-shopping, the followings may be of some inspirations to help you out -
the Fiesta Resistance
Prints, Posters, Books, Paintings ... lots of different stuff you could get here 
The Banksy work at the entranceFull photo set here
***** Flying Eyeballs
08-12.12.2009 (already closed)
The standalone shelf at the shopfront 
Various items inside the shelf
Swallow composed of helicopters
Full photo set here
*****
Art for Kunst at Christmas Bazaar
The Old Truman Brewery
until 21.12.2009
Limited edition sets of T-shirt and picture by various artists
Full photo set here
*****
New Acquisitions Show + Christmas Party (09.12.2009)
until 26.01.2010
Minotaur 2 by Gordon Cheung
Sea 0° - 135° by Jan Dibbets
Full photo set here
*****
Further Readings -
Official web of Pictures on Walls
Flying eyeball press release at Alive-not-dead
Official web of Gordon Cheung