Mainly food. I do it for fun despite having the appropriate funds to eat well and better than most.
I hit up the same dumpster last night and it was packed beyond belief with plastic rubbish, a search would have engulfed me or made a mess. I may be a vagrant and a dog, but I know someone has to clean up a mess that's made.
Also my next stop will likely be India. I need to properly learn some yoga and I've heard tales of their over the counter drug availability, which could please my frail heart until my wallet flutters in the wind as empty as my brain is.