- Anything in one of Oakland's many trash piles
- Berry patches growing on city or state property or right next to the sidewalk
- Anything in a "free" box.
- Things on the side of the road arranged in some way to indicate that this is a pile that a human has put thought into arranging for other people to take.
- fruit accumulated on the ground on the part of the lawn between the sidewalk and the street
- on branches hanging over into the sidewalk and beyond
- accumulated on the ground on the part of the lawn adjacent to the house. even more ambiguous if there's a fence. see if you can ask for permission by knocking on the door and introducing yourself, limit yourself to a small number of fruit (don't be greedy), and for god's sake - daylight hours only (you don't want to give people a heart attack).
- low-hanging branches on the part of the lawn that's adjacent to the house when there's no fence. in this case, let your conscience be your guide.
- trash/recycling cans put out on the sidewalk for pickup. Although some people think it's rude to go through trash cans (especially early in the morning/late at night) other people use these cans as a livelihood or at least a source of supplimentary income.
Better to leave it alone:
pets (cute, but somebody will miss them!)
- but what about an obviously lost or abandoned pet? (obvious = loves people, no collar (if there's a collar it's more likely to be lost than abandoned), recently appeared in the neighborhood and has been there for at least a few days straight).
- wild animals
- bikes on someone's porch/lawn
- things on people's lawns and driveways
- things that are sticking out the back of trucks or cars
- dot matrix printers - a dime a dozen.