Jobs
After you stop working for Nook you have to pay off your debt some how. Well here's a list.
1.Archeology... Dig up fossils and sell them to Nook.
2.Bug Catching... Like chasing butterflys? If you do then this is the job for you.
3.Fishing... Like a real fisherman catch fish then sell them to Nook.
4.Gardening... Get all sorts of fruit from distant towns and sell the fruits to Nook.
Tell me which ones worked best for you.