I got a little KLX140L I bought for a pit bike when I was dragracing, but made sure I had something that was large enough for some trail riding. In fact, been trail riding with some folks here (well, I think they're here, I know they were at CSC but dont post much).
Its a small 144cc big wheel bike, but still has over 10" of ground clearance and it'll tractor up any hill I've faced so far at Uwharrie and Brushy Mountain.
Added a small molle pouch to the side to toss in a bottle of water etc, nothing crazy.
Looking to add a little, cheap cargo rack on the back so I can strap a gas can to it so I can run up to the gas station a mile from home (back roads) to get gas for the lawn mower etc