Can I use one Arduino for all functions?

Hi! I am running out of USB ports on my PC using an Arduino-Logitech pedal mod, a Simhub-arduino REV LED mod, mouse and keyboard, wheels, Arduino-powered Logitech shifters, etc... 🙁

Is there an Arduino sketch I can use so I can use only one Arduino for the pedals, shifter, and rev lights? I am not very knowledgeable in this area, I don't even know if it's possible. Someone pls tell me if I'm out of luck or something. I'm looking for solutions even outside the Simhub interface.

EDIT: I currently have one Arduino Leonardo and two Arduino Nano being used all at the same time. If that helps...