So if you missed the first post you can watch the video here... This guy used a couple small tech devices to amplify his acoustic guitar pretty well without having to lug around an amp...

http://falseta.com/questions/25/how-to-get-acousti...

In this video, he uses all sorts of surfaces to amplify his guitar, including a laundry basket, amazon box and glass... pretty cool...

Not sure how practical it would be, maybe in a small setting or small performance venue, but the idea is cool and might be worth experimenting with...

Parts used:

Vibration Speaker

https://www.amazon.com/XDREAM-X-Vibe-Vibration-Spe...

Vox AP2AC
https://www.amazon.com/AP2AC-amPlug-AC30-Guitar-He...