A cool freebie you can download from the free stock photo resource, stock.xchng: Cork Texture.

The original image is a little strong, but it’s a very large size and I’m sure you’ll be able to adjust it to your liking with a little Photoshopping Lately a lot of beautiful website designs use textures in the background, so it may be a good idea incorporating some wooden boards (or a little more uniquely: a cork wood texture).

Enjoy.