unless you make it yourself then it isn't the sort of thing to indulge it - anything in the shops, even the lowest carb ones, are just so high in carbs, usually sugar, and having got used to low carb, they really do not taste nice.
I have an ice cream maker and create egg and cream custard to pour into it - then you can add in anything you like in the way of flavourings, or scoop it out and add in whatever takes your fancy. A splash of alcohol, a swirl of fruit puree, or the flavours used in cooking - even a tiny amount of honey (I coat chopped walnuts in a teaspoonful) but you need to be careful as it is all too easy to decide to have a taste and end up licking out the bowl.