There are so many things people can do alone that are fun. It just depends on what you like to do for fun. If you are looking for things, you can do alone at home, well there is reading, sewing, cooking, exercising, or taking a bath. Those are just a few things you can do in your house. If you want to do something outdoors alone by yourself, you could go for a bike ride, go hiking, go for a walk,
. or gardening. Those are all things that you can do alone and relieve some stress while doing them.