There's several low level quests which require you to kill a WHOLE LOT of particular types of mobs. These generally have cash rewards that you can pick up piece-meal. Kill 5-10, get paid for 5-10 and so on. Also, one of them allows you to pick up an item which someone will pay ~1 silver for after each mob kill. So you get paid for killing the mobs and you get the loot for collecting the things. Just doing the newbie/academy quests should leave you with about 3.5 gold.