That's the only reason I haven't. It's not that I don't have the technical know-how to build them a custom button setup. Or that I think my cats wouldn't use it.
Based on cat keyboard usage, I imagine in most cases you’d get something more like “litter food pet food food food food play pet food litter food” — and that’s just in the first 10 seconds.
Cats love to mess with their environment just to see what happens.