I have a food processor/blender combination thing that only cost 60 euro and it's perfect! I'm eating banana ice cream out of it right now. Shop around!

Where are my manners? Here's the banana ice cream recipe. Chop and freeze four or five bananas, then whizz them in a food processor until they turn into thick creamy stuff, you might need to scrape down the sides once or twice. Orgasmic!