A small economy system for the playerbots on my AzerothCore server, internally called "Dad Mode". Randomly picked bots get a gold bonus on kills, plus a warehouse ledger that records surplus and a periodic sorter that consolidates stacks in storage without getting in a real player's way.
Everything sits behind a single master switch, DadMode.Enabled. It is declared here on purpose because it is the central kill-switch for the whole "Dad Mode" module family, several of my bot modules hang off it.