Worth its weight in gold - Therm-a-Rest Z Seat

Most backpacking chairs are around 2 pounds, which is more weight than I want to carry on a lot of my trips. While this pad isn't as comfortable as those chairs, the comfort to weight ratio is insanely high. Putting this on a rock, log, or bench vastly improves the comfort (even more so if the object is wet or cold). I wouldn't bother setting up my collapsable backpacking chair for a 5 minute rest, but it's a no brainer to unfold this thing. As an extra bonus, you can use it to boost the insulation and padding of your sleeping pad if you have a particular pressure point (like your hips or knees). Or if your inflatable sleeping pad won't hold air, it can be part of an improvised solution.

Of course, it doesn't provide back support like a collapsable chair would, but if you're going to be hiking more than you're resting, it's a worthwhile trade off. When I backpack to a basecamp, I bring the collapsable chair; any other time, I bring this.