Controller Kit for 2 Stepper Motors

Sounds like a great application for a custom chip. Unfortunately, there is no general purpose kit because everything built from electronics usually has a specific function from which it satisfies a specific purpose. That is to say that before a device can be built (or made into a kit) there has to be some sort of parameters and rules on which it is based.

If you substituted words into your request like automobile for stepper motors, trains for solenoid valve, and airplane for LDR (what ever that is) and then reread your sentence I think you might begin to understand the problem. You will need to provide a lot more details before anyone attempts a suitable answer.