We have recently acquired an ice machine with a built-in compressor, and we are enjoying every little bit of ice cream it's churning out. One of the huge limiting factors of being allergic to dairy products is that, well, most ice creams are made with milk and/or whipping/double cream (granted, there are some products based on soy with an uncomfortably grainy feel, and a few made on oats, but you pretty much have to travel to another country to obtain these).