08-Sep-2015, 7:01 PM
Perhaps using Adventure Mode, the keys could be an axe, shovel, pick, and shears (with one durability each, except for whatever one is the green key) and the "locks" are whatever material the particular tool digs, like wood, stone, dirt and wool. The chip socket might be a villager which trades whatever item represents the chips for something to break the socket block.
I eat chips! *crunch crunch crunch*