So I finally got around to making a calendar wallpaper for Smashing Magazine’s monthly feature. Do take a gander here, and download one for yourself!
As you can see, there are quite a few to choose from. It’s a great source for wallpaper every month if you can find one you like (I hear “Telephones” is pretty popular and awesome).
Also, make one yourself! Check out the submission guidelines–it can be anything you want. The most annoying part is making the different resolutions and aspect-ratios, so be sure to make your design flexible.