First and foremost is that you find the list of codes to enter into the Indyme box, there are only a set number of descriptions to pull from. No use placing one in water if when the guest presses it and says a description 3 aisles away.
Of course, you could always just train the team to know that "Second Level Juice Bar" means "Water"...
(No, that's not a code you can use, but I'm pretty sure I've heard the Indyme call it out once. The juice bar part, definitely. The second level part I may just be remembering from the gift registry kiosks. Regardless, there are certainly a lot of codes that can be assigned to a red phone but not to a call button.)
I believe all the brand-specific video game codes should be available, unless your store never stopped using them when they were supposed to. Playstation = Water, perhaps?