Always bothered me that my LR didnt have sides on the top to prevent cups falling off the top. So I made this with some leftover dark walnut I had. I attached it to the top using magnets so I didnt have to drill holes thru the top.
Nice! I've been keeping 3-4 cups on top of my L1 for 4 years and haven't lost one yet. I thought about putting some bar magnets along the top edge, but haven't found the need yet.