Checking out Dave's Photo Blog recently I discovered he's opened a CafePress store.
Like numerous others I have set up a shop which you can access at www.cafepress.com/davesphotostore . There are lots of gift ideas to choose from including T-shirts, apparel etc all printed with my original photos. Check it out.
My favourite item is the Tiger Mousepad, something that would also be appropritate considering the version of Mac OS X I'm using! No but in all seriousness his photos are pretty amazing, check out his store.