not something youd make yourself, but theres a bunch of vegan ice cream brands out there actually. personally i love soy peanut butter zig zag, and strawberry almond dream. oh, and tofutti cones! but there are many other brands.

also, most pastries can be made vegan... even with things made by a mix, such as brownies or cookies, there are some brands that have no dairy in the mix, and you can use margarine in place of butter, and various substitutes can be used for egg:
http://chefinyou.com/egg-substitutes-cooking/