This is my new Animal Crossing OC, Dot! Great moneymaking tactic: get a decent shovel and go dig up manila clams from the beach, then sell them. Easy as that. And you can get the floating balloon presents off the East side quickly! It's, as Nook himself says, a win-win-win situation. You get a decent shovel. (Win!) You get some tasty Bell Bags. (Win!) And you get multiple presents per day. (Win!)
I've been playing too much Animal Crossing... I keep hearing the whooshing sound that you hear when you're near a floating balloon present...