I like ocean-themed projects, the ocean, and projects without a lot of complicated steps. Here is a beanie that is tough enough to be punk and subtle enough to show your love for the sea!
1
Unroll beanie, lay flat, prepare. (I got this anchor stencil for .59 at a craft store--I know the finished version looks huge, but this stencil is probably about 5-6 inches high).
2
Paint woodblock stencil, position lovingly on hat, press down. Hum one line of your favorite song (for funsies).
3
Pull off anchor, repeat step 2 if image isn't dark enough. Let dry overnight. Wear.