Recycle the glass and the metal. Stick the organic things in the compost. Bash the ceramic stuff up with a brick and pop it in the bottom of your pots of geraniums. Add 1p to the change and buy yourself a fudge bar.
I collected some crisp packets from a place I went to at the weekend. They were just dropped by litter droppers. That doesn't seem so bad - I just don't understand how people who profess to worship nature (or some paganish variation) can leave all that tat at the swallowhead springs. (rant rant etc).