Branch,grab a simple bentwood chair,30 bucks new or fleamarkets for $5.
Then get 2 or 3 square feet of 1/2inch plywood,cut to size and screw the wood to arms of chair.
then just mount hardware and Bob's ur uncle.... I made 2 plywood shapes that looked like a pingpong paddle,used what would be the handle of the paddle to fasten to the arms of an old compchair.
Now I have a bentwood chair that holds all my junk,mounted a usb hub to chair and just plug the chair in when I want to fly....