This is the only reason I will occasionally make butter. To make it from creme fraiche cultured with buttermilk. More flavor.
Ice cream I sometimes make by freezing a mix that includes some booze as antifreeze, then once completely frozen, cut into chunks and whir it in the food processor. Then back into the freezer. That stays pretty nice, is lovely. Started this because one of my (grown) kids is vegan and it works with coconut milk as the cream.