Sorry, I misread your initial post. I thought you were talking about the cutting boards on top of the lids, not the lids themselves. I made those in the past.
As for the lids. Provided you can find thick enough starboard, I would think it could work. You'd probably have to bond a piece around the edge to create the lip versus trying to router it. There was someone here who made molds from the existing lids and built his own replacements out of gelcoat and fiberglass. Might want to look for the thread.