Hello! I would like to create something whereby if I have two small wireless objects, I can push a button on one and doing so will make the other one light up. Can someone please guide me in what Arduino product(s) I should start with?
Well, you could do it with two HC-05 bluetooth modules and any Arduino you like, which means you might as well use a Uno. I rather feel you can do what you want without using any Arduinos.
Cheap 433MHz keyfob with receiver module that has pins going high. I have a few of these where the receiver has 5 controlling pins, 4 go high based on which 4 buttons are pressed and 1 that goes high when any are pressed. It was probably a couple bucks on ebay.