We use the collapsible Airstream fishing-type chairs. They fold up and go into a sleeve that comes with them, and the sleeve stows in a zippered pouch on the back of the chair. They are comfortable, at least much more so than a chair with an aluminum frame cutting off the circulation to your legs. IIRC, we paid around $20/each for them at the Airstream company store.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.