I donāt know. Now that I look closer, most of the āfreeā ones are from vectric, which come in .crv files (for vcarve and aspire). The paid ones are super expensive, and from makecnc.com. I also canāt find that maze. That maze is pretty neat.
IIRC Bananagrams doesnāt use a board, but the tiles would be awfully similar to the laser cut ones in that project. Youād need more (144 instead of 100 I think) and of course the letter distribution is different. Iād want to find a really dense wood for them, just to create that extra heft that tells everyone āexpensiveā.