In your free time you should de weed your island or comb the beach there are so many thing’s you can do so just in case you forgot i will tell you
you could collect stuff and craft a DIY recipe
you can fish or catch bug’s and dig fossel’s for Blather’s
or pick up all the weed’s and sell them for bell’s to buy stuff like furniture
you can also disign your house with furniture and poster’s or floor board’s
you can do lot’s of thing’s i can not name all of them