Wearable electronics is a super fun way to express your creativity. Who doesn't love a tricked out pair of sneakers, a weather watch, or a fiber optic coat, and don't forget about Fido who could be strutting his/her stuff in a sweet LED pet hoodie. There is something here for everyone. All you need to do is bring your imagination and start making.
If you're using or considering using an Arduino microcontroller in your project, check out the electronics lab on circuits.io - they have an Arduino simulator and code debugger so you can test it all out and save yourself a bit of unnecessary frustration. Have fun!