Got a bamboo computer lap desk as a gift yesterday, but I think I found a better user for it.
I still need to clean up the layout, but I think this will work nicely given I outgrew my small board.
I found the board online. Only $15... added some velcro squares between each hole, some wire clips underneath, some rubber feet and jammed some picks it to hold the feet in place. I'm actually quite pleased with it - hell of a lot cheaper than equivalent sized boards marketed as pedal boards go for. https://pitch.pe/universal-laptop-bamboo-stand-for-13-inch-laptops-size-56-5-x-28-x-1-4cm/