One of the problems I had at the maker faire was that people wanted to try different games, but enabling them all at once caused problems. Â I’m working on a software solution to mitigate some of those problems, but my wife suggested that next year I can have more than one phone available to use.
So I’ve gotten several more old phones to turn into GruePhones, and they can each run a different game. Two will be based on old Deco-tel “chest”phones, sometimes called spy-phones…
… because they’re hidden in a box. Â Open one and it looks like this: 
This one is push-button, but I also have a rotary one (in slightly better shape even).
So that’s two, but I also have one (maybe two with all the parts I got) of these babies:
I’m thinking that the push buttons on this one can be used to save different games…. and I think I can make them even more interesting.