I have a Rival ice cream maker with a pre-freezable churning bowl. About 1.5 qt capacity. Really, anything similar would work. If you don't have a lot of disposable income, you can often find ice cream makers in thrift stores, in with the other countertop appliances. Or if you'd rather invest a chunk for a brand new one, there are a lot of Cuisinart models out there that are popular (ICE-20, ICE-30, ICE-100, etc.).