Take a seat. Whaddya mean, where? You could have one right there in your carry bag.
Perhaps not the most ergonomic of chairs, the Grand Trunk Collapsible Micro Stool is nonetheless a fine alternative to standing.
Just pull this little red stool out of its included 12-by-6-inch sack, unfold, extend the aluminum legs, lock in and plop down on the nylon seat. Expanded, the stool measures 9½ by 9 by 10 inches tall.