What if you could walk down the street and pick up a half a quart of milk without paying anything? What if you were going on vacation and instead of tossing that unused cheese or those extra yogurts, you could put them out for someone else in the neighborhood to use? If you lived in Galdakao, Spain, you could. A community there has set up a “Solidarity Fridge” where neighbors and locals can drop off leftovers and other food items for others to enjoy.