I use the cutting board all the time to prep salads, veggies, etc. My number one tip? Turn it OVER and use the bottom side so the top stays smooth and clean. That plastic will scratch. I store it under the handy side couch in my 25 EB.
I just got a new laundry bag mounted on a wooden X frame about 33 inches tall. (it keeps the laundry off of the damp floor of the shower). When I'm doing a big prep job - I'm thinking that I could put some little rubber feet on the top of the frame and use it to hold the the sink cover... and have some extra counter space. The counter extension that opens across the door? D'oh, not the most brilliant design.
Today is a gift, that's why they call it the present.