A thieve could steal the gold and that starts a quest to try to retrieve it. Alternatively the party could discover that the gold makes them a target to various vagabonds and bandits thus a whole adventure could come from the party just trying to get to a bank.
Now I know that this wont make to much sense for people who live under ground but what about elephants. Because Dwarves are smaller you can fit more archers on each elephant. this is an idea I was thinking about for halflings but it should work for dwarves too. the Guard drake from volo's guide...