Are you looking for a way to change your computer station? I am a big fan of L-shaped acrylic picture frames. They make great sign holders. The signs help with answering all of the "what was I supposed to do?" questions. If you use your computer stations for reading and math, you can use different colored background for the different subjects.
Have you checked out this site?
Here's another one to check out:
Did you notice the polka-dotted table cloth? Isn't it cute? The plastic flannel backed table cloth is such a quick and easy way to add color and seasonal flair to any classroom. You can find cheap ones at Dollar Tree. I bought this one for $2 at Staples.