Go to the Entertainment Area and catch a fish called an Anomalocarid. Give it to Joseph, he will almost have a heart attack from how big and mean it is. The store value is $500. Joseph will pay about $1,200 for it.

Get a fishing rod and catch lots of Sea Bass. Enter the fisherman's house and sell the fish to him. You should get a decent amount of money by doing this.

Walk around at night and notice the shiny little things in the grass, the road, or the beach. Stand in front of them and press A. You will get a random amount of money or a special prize.

After you do the "Unlimited coins" glitch, get 99 video game companies and sell them to the store. They will be worth $5,000 each. Note: You can do this as many times as desired. If you run out of coins, do the "Unlimited coins" glitch again.