Simple beeping remote control circuit

Hi, I am a student, and I'd like to build a circuit that beeps with a remote controller, so when you press a remote button that piezo (or something like that) starts to beep.
I have an Arduino Uno but I'd like to make as simple and small as possible.
Do you have any suggestion where I can find a tutorial for something similar or something that can lead me to that?
Thank you in advance guys!

You need more hardware

Minimum would be another UNO for the transmitter, and also a receiver for the UNO you already have

Or you can buy a 433mhz key fob transmitter, but you still need a 433mhz receiver and you will need to write code to read the data from the key fob