I'd like to add a simple battery-powered amplifier circuit and a speaker to a project guitar I have. I've seen these advertised, but I'd like to make one myself with higher quality parts.

Does anyone have any experience building something like this, or at least know where I can get some instructions or schematics?

I searched around on Google for a while, but couldn't find anything of use.

Thanks for any help!
I'll need to grow my hair out a little more to pull that off, but yeah, that's the idea.

I'd just like something a little louder than an unplugged electric but not as cumbersome or as fragile as an acoustic.
That's what I was looking for!

I agree, it's not going to sound great, but I'm not expecting a Marshall-like tone from it.