The idea for this came into my head a couple of weeks ago. I’m probably not the first one to do it, but it’s quite fun to play with. Similar to a marble labyrinth, only much easier, which makes it great for younger kids. Just set the marble on the small start hole, then get it to roll down the path all the way to the end, where it drops satisfyingly into the little pouch. (I couldn’t resist using some vintage neck tie scrap for the pouch. It gave it a nice billiards feel I think.)
The design ended up having a little Victor Pasmore feel to it, which I like.