Sportneer Portable Lightweight Folding Camping Chair for Backpacking, Hiking, Picnic
These are my Go-To camp chairs. They're inexpensive, but still hold 350 pounds (or so Sportneer says...) and, most importantly, they fit inside a Plano 108qt Sportsman trunk! They pack down small enough that I have been more likely to bring them than leave them at home compared to a more traditional folding camp chair that requires less assembly but is much bulkier to bring along. I like that they're comfortable and seem to be durable enough for reasonable use but they're cheap enough that you don't mind if they got ruined. A notable drawback to them is that they're not as stable as a traditional, four-legged chair, and my little kids (younger than 6) can't use them without falling out or tipping them over.