Skull beads are cool. They come in many styles, depecting all kinds of emotions, and can be used to make unique bracelets, necklaces, lanyards and other creative items.
www.paracordgalaxy.com has a good selection of skull beads, along with all types of 550 paracord and related itmes. They also have excellent paracord tutorials giving step-by-step instructions for bracelets and other projects.
They offer a fun tutorial telling how to create a friendship bracelet using skulls.
Take a look at the photos on their skull beads page. As you look, I'm sure you will come up with innovative ideas on how to incorporate skulls into your projects.