Some ideas for your character's hobbies! Some are taken from websites, like tophobbyideas.com and wikipedia. Keep in mind some of these might not exist in the wings of fire universe.

Acting

Astronomy

Art

Battle training

Bird watching

Building

Camping

Caving (exploring caves)

Climbing

Collecting (jewelry, rocks, flowers... whatever you want)

Cooking/baking

Crafting

Crochet

Cross stitch

Dancing

Debate

DIY

Embroidery

Fashion

Fighting

Fishing

Flower arranging/collecting

Flying (like racing or,jogging for dragons?)

Hiking

Hunting

Jewelry making

Knitting

Listening to music

Meditation

Origami

Owning a pet (fish, sloths, scavengers etc)

Painting

Playing an instrument (piano, violin, etc)

Pottery

Puzzles

Reading

Sculpting

Sewing

Singing

Sports

Stand-up comedy

Stargazing

Studying

Swimming

Taxidermy

Teaching

Traveling

Volunteering

Walking

Woodworking

Writing (scrolls, music, etc)

Yoga

More to be added later!