Use a Button to Play a Recording in a Medium-Small 3d Print but I need Help!

I have decent experience tinkering with an arduino and a breadboard, but my knowledge stops there with temporary!

My goal is to essentially print a container, and wire it up to where when a button is pressed, a recording is played via mini speaker and LED diodes activate. Is there an inexpensive microcontroller that would suffice?

Using a full arduino is far too large.

Additionally, would I solder the wiring directly onto the microcontroller itself? Or is there some form of smaller breadboard style component that serves the same purpose?

Super new to building long term electronics but I figured I'd start here!