I don't know what it is, but I've been really into "origami" style embroidery patterns lately. Confession: I was WAY too good at geometry when I was in school. I think I got 106% in that class (yeah, I did extra credit when I already had 100%--NERD). I sketched up some patterns from origami animal photos (you can find about any animal you want when searching images online--just sketch the fold lines to make it 2 dimensional). I modified them slightly, mostly leaving out any very tiny "fold" lines that I felt would detract from a final embroidered project.
I really liked this squirrel, so I made it into a wall hanging by gluing the embroidered fabric to the hoop once I was finished stitching and covering the back with a piece of trimmed card stock so you can't see the stitches from the back anymore. To cover the back, just trace around the embroidery hoop onto card stock and cut out the circle just inside the traced lines. I tied a piece of ribbon at the top and voila! Now I can hang it on my wall and smile at his geometric squirreliness.
Feel free to snag the .jpg of the squirrel pattern here and resize it to your needs, or you can download the .pdf of all 4 patterns I made here (it's free).
If embroidery isn't quite your style, I found these necklaces on Etsy! I got the squirrel (of course!).