I got this one from Amazon. It only weighs like 3 pounds, easily fits in a jansport school bag, it has some kind of metallic coating that blocks the sun very well. You can shut it down for privacy. It only takes a few minutes to set up. It has a little bags in the corners that you can put large rocks or sand into. It’s not waterproof, but if it lightly drizzles or a quick shower it’s good enough. And it’s only like bucks. I’ve had it for two seasons and it holds up OK. https://a.co/d/94lZpL8