I know kids love white boards and dry erase markers.
This is my twist.
We used our desks last week. At first, they were skeptical. But, once I did it and they tried it, they loved it.
I use old socks for erasers. I take them home to wash when they need it. Again, my kids freaked out at first, but I promised them they were clean. They are just old socks that the dryer had eaten their mate. Plus, my husband is extremely OCD and buys new socks every few months and I recycle his not so old ones for erasers.
Also, I will warn you, the socks don't completely clean the desks. We did use some spray cleaner as well when we were completely finished.
Be sure to link up with Holly for some good Tried It Ideas.