I have a idea based in the Hunting Board Quests of Ragnarok Online. You must hunt a amount of monsters in each city and trade for a substancial amount of zeny. This idea will set in the main cities of the planet whenever you are, ATM boxes with a holocron (close to it) of the local autority to hunt down a number of targets or capture them alive. After you kill the targets or do your capture and make your status report, you use a especial credit card and input it in the ATM and received your reward. This idea can be used as well to pest control, killing a high number of animals, like in the Ragnarok killing 150 monsters. This can be used like a idea to farming money or level up more quickly if you have the option to turn the reward in experience.