My father in law goes to a lot of music festivals and does a fair amount of camping as well. He has started to buy those reacher/grabber things at the dollar store and gives them away when camping. The ones he gives out are obviously pretty flimsy but it's a cool idea to promote campsite cleanup. My wife got a two pack of decent grabbers at Costco a while back, not as cheap as the dollar store but will last longer. A grabber takes up minimal space (can easily be stowed with the turnbuckles), and makes cleaning an area up a little more leisurely, especially if you also have a trash bag lined bucket. Through careful testing, I have determined that you can actually wander around camp with a beer in one hand and a grabber/bucket in the other. Find trash, set bucket down, grab trash and place in bucket, sip beer, repeat.