Among the most ridiculous Christmas gifts available to purchase this year for that hard-to-buy-for person on your list are such sought-after items as canned unicorn meat, knitted beard beanie hats, and horse head masks. Or, if you’ve got some extra pennies, you could go for a diamond-encrusted flash drive, solid-gold high heels, or, for just a couple hundred thousand dollars, a personal robotic servant. For less eccentric shoppers, high-tech gadgets such as drones, photo printers, and panoramic video cameras top the most-wanted gift lists this year.