As quite a number of fans of the show appear to like Ben's miniature pinball tables, I thought some may be interested in the idea of a miniature 9pin bowling table.
I recently spotted one having been constructed using the Fischertechnik construction set:
https://www.youtube.com/watch?v=iBpiVlUsb34
There is a bit more info on the build here (page 28 - 31) but unfortunately I can't really read it as the article is in German, but the pictures look quite good
https://ftcommunity.de/ftpedia_ausgaben/ftpedia-2016-2.pdf
It looks like it uses an old friend of Ben's from the camera tracking project, the PixyCam.
The design appears to have been based upon a project featured way back in a 1979 club magazine (page 5):
http://ft-datenbank.de/web_document.php?id=a32e0dd3-22c2-473b-9b17-43897999a726
which is quite amazing if you consider the technology available to hobbyists at the time.
Anyway, I thought that it may make for an interesting show project. How could it be improved ?