My favorite shooting activity is offhand plinking and I look for things that make shooting a little more fun. My new favorite target is 8-16 ounce plastic soda bottles. The plastic soda bottles really make noise when hit and jump when you hit them. Some of my air rifles are rather low powered (like 500-600fps) and it makes those guns really fun because the plastic bottles last longer and stay loud longer. Target response is gratifying and more seems to be better. I may try hanging some. They are cheap and I can still recycle them when they get too many holes in them. My 500-600fps guns are getting more use because of these bottles.