Ok, fitting kinda into that sort of demographic myself, here are a few more suggestions, some within or just over budget:
Brookestone's Perfect Drink Maker
Whoa! I just saw this on ebay: ION iCade Core for iPad. https://www.ebay.com/i/193535276622?chn=ps&mkevt=1&mkcid=28
It’s supposed to be bluetooth.
https://www.amazon.com/Ion-iCade-Arcade-Controller-iPad2/dp/B008BGY2I6
Roger that, still a great idea; I have a iCade Core that I got before I realized it did not work for my android. I plan on Converting it.
Updated link to something that's actually available. You can even go all out and get a "cabinet" version of it!