[*]Soundstream Picasso Nano , 4 channel class D amp
[*]Denon MC2000 controller
[*]cheap Lanzar 5 band preamp
[*]Plywood and a couple NL4 connectors
[*]Audio Technica ATW 2000 series wireless mic (when wireless is needed...)
Testing it out on the driveway with a fresh set of SLA's and a pair of T18's.

So far so good. The run time off of a deep cycle battery is more than enough for an evening and the volume is plenty for an outdoor wedding ceremony or a rowdy night around the campfire with the gang. I did a western wedding out under a large oak tree in a cattle pasture with no power nearby and the client was impressed that there were no generators running to ruin the ceremony.
The laptop has a 12 volt charger and the Audio Technica wireless mic was chosen because it runs on 12 volts ("wall wart" transformer is 12 volt...)