1.  
Invisible Pink Unicorn.  Actually the symbol for it.  Sorry, I forgot to add the link.
2.  Tattoos.  I don't have a single "tribal" tattoo.  
My tattoos, in the order I got them:
Anarchy symbol on right arm  (homemade, bad idea)
Norse Runes on my right ankle (homemade)
Large skull on right arm to cover the [stePH's favorite word]ed up anarchy symbol.
Frihet on a dagger on left forearm
Dragon around the skull on right arm
GIGO on right forearm
The crowd I ran with when I started getting tattoos was best described as "bikers" but they weren't Hells Angels or anything.  NOT THAT I HAVE A THING AGAINST HELLS ANGELS.  I am not nearly bad ass enough to say anything bad about them.