I bought my 12 string steal string acoustic for $50 from a friend. I always only string it as a six string though, 12 sounds nice but six is more versatile. But the thing is I don’t really care about it too much, and I beat the hell out of it. I drop it, I take it out busking in February, all that shit. I do have a nice electric SG, but I just really like playing an acoustic better, it’s more fun to just strum chords and sing along. One song I really enjoy playing with it is “Tunnels” by Arcade Fire. That riff at the beginning is sort of an F7 scale, so you can drone an F barre and play the riff around it. It sounds so nice when you kick in the riff for the first time. Also “It’s 5” by Architecture in Helsinki is super fun and simple. The main riff is just the classic G, G/F#, Em, C. The break down is a little different (E/C5, G5, Cadd9, A5, B#add9, Cdim2(?), Cadd9, D5, C5, D5, C5) but it’s all quite easy and fun!