check out the headless that Rogier has in his recent videos. He has other styles as well, but I know those headless can be pretty light if you get one that is hollow in the body. I have a Strandberg chambered guitar that is pretty light and easy to handle in a tight space behind my desk.
Rogier slings his a lot higher than I would so it can fit in the wheelchair with him. You will need to look around the site here for other videos of his playing other styles.