Writing
Whether journaling, writing poetry, or working on a novel, writing is a great way to spend some alone time. Trust me, writing helps in more ways than one.
Hiking
With no one else around, you can take your time and enjoy the scenery at your own pace. Plus, it's a great way to disconnect from the world and enjoy therapeutic solitude.
Reading
Whether you prefer to read at home or out in nature, reading is the perfect activity for a quiet and introspective loner. The characters in a book and their imaginary world can be all the company you seek.
Photography
Whether you prefer to take pictures of landscapes or people, photography is a great way to express your creativity and explore your surroundings.
Cooking
With no one else around, you can experiment with new recipes, take your time preparing meals, and maybe (if you wish) have them around much later to have a taste.
Playing An Instrument
You might play the guitar, piano, drums, or other wind instruments. Whatever you choose, playing an instrument is a great way to spend a reasonable amount of alone time.