the best i feel like you could do with 2 pins is a taper pot. although with that, you are only going to be able to select one, and you won't know which one you are in, also you are going to need to implement code such as when A0 is less than this, do this, but when A0 is greater than this but less than this, do that.
Along with that issue, I believe the ATtiny85 has 4 analog pins, and you may be using them.