Rick Riordan said this quote
“ They passed a couple of guys making a bronze windup toy. At least that’s what it looked like. It was a six-inch-tall centaur—half man, half horse—armed with a miniature bow. One of the campers cranked the centaur’s tail, and it whirred to life. It galloped across the table, yelling, “Die, mosquito! Die, mosquito!” and shooting everything in sight. ”