|Spike Ball Dodecahedron by Beads by Becs|
The beaded beads shown above were made Beads by Becs. She blogs about them here and sells the pattern on her Etsy shop here.
This dramatic choker is made by Good Quill Hunting and it uses not just spikes but twins, peanuts and lots of other nifty beads. I LOVE the combination of blue and bronze.
This is also not a free pattern; the link to buy it is here.
OK, OK, I know you come for the free tutes, so here are a couple.
First, spiky hoops for your ears from Preciosa-Ornela:
A PDF of the pattern is here. (I think these might be a tad heavy for me to actually wear. These appear to be clip-on earrings, with the clip-on finding embellished with seed beads for a nice touch.)
And below are two different Beading Daily links for bezeling around spikes for use as earrings, focals, or, as one of the designers calls them, "prayer vessels."
Psyched for Spikes guides you through the 7mm X 17mm size, and "Peyote Stitch and Spike Beads: Made for Each Other" takes on the 12mm X 18mm whoppers.
For more design inspiration, here is a link to a Pinterest board devoted to spikes.