Etsy seller GimmCat makes multihued wigs with integrated unicorn horns (tails and assorted ponyana as well): "This sale is for the mischievous Snips style My Little Pony costume wig for cosplay, fantasy costumes, conventions, raves, Renaissance festivals, Brony costume or just because! This wig is especially suited for males wishing to take part in the My Little Pony fun!"
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.