Most start with an Arduino Uno and this appears suitable for your needs.
If what you want to do is simply turn things on and off with switches and buttons, I guess I'm hard pressed to see the need for a microcontroller.
I'm Intending to replicate 1936 Harley VLH Police Motorcycle for Keystone Kops, clowns without makeup. Shrine Hospital kind of thing. Philanthropy, yadda.
The initial plan was for using Arduino Uno to control multiple effects on the scooter, like flashing LEDS, oogah horn, bubble machine, yadda. A rear deck having +/- jacks for each channel programed and driven by Arduino via buttons or sensors. I was inspired by Disney's night parade in Orlando. I was trying to get easier things going, then put the Arduino to work as it's intended. I then got sidetracked with shields for this and that, ...