$35,000 NitroCream Liquid Nitrogen Ice Cream Maker
Sure, it’s designed for restaurants, but there’s nothing stopping you from getting one. Other than the price tag, of course.
I’ve had liquid-nitrogen ice cream — we did it in grad school. It’s good. The fast freezing means you get small ice crystals, so it’s smooth, and the nitrogen just boils away. But it cost several orders of magnitude less to do it by hand.
That thing makes my little Cuisinart ice cream machine look like something a child brought home from arts and crafts class. I want one, that thing is cool! (hmmm… Did I, or did I not, intend that pun???) 🙂