We added some tiny cork-feet to keep them from sliding around, but in hindsight this was probably unnecessary. In terms of protecting your board, use...
This Instructable details how to make hardwood cutting boards out of maple and cherry scraps. Not only are they beautiful and high quality, they're made from materials that would have been discarded otherwise. Reduce, Reuse, Recycle!
Step 1: Get your materials
For this project, my friend N. graciously provided the materials and his workshop. We used maple balusters removed during a remodel as the main elements of the cutting boards. You can see from the two pieces in the foreground that each piece had a few holes in the ends from where they'd been attached to the stairs/banister. We cut off just enough material to get rid of the holes, not worrying about uniform length.