I've done a pretty low carb trifle before now: Sugar free jelly, a bit of fruit (but no cake) + sugar free custard with sweetener - some carbs from the cornflour, and fresh cream on top.
Pears and chunks of parmesan with a bit of honey to dip it in.
Eaton mess - 1 of those meringue nests contain about 12g carbs but give loads of sweetness, broken up with loads of whipped double cream and strawbs.
Cranachen, traditional Scottish dessert - whipped cream with a bit of whisky and honey, layered with toasted oats and raspberries, Search for a recipe and you'll find every one is different, but I put about 4 tablespoons of whisky and 2 of honey into a pint of whipped double cream, toast about 100g of oats in a dry frying pan, and squash a couple of punnets of raspberries leaving about 1/3 for decorating, then layer raspberries/oats/cream then once again finishing with the whole raspberries to decorate.
You can make it in a big bowl and share, or if you're the type of person who has sundae dishes, make individual ones.
Should look like this
:
I don't have a name for it, but Greek Yoghurt + broken walnuts + a shot glass of Pedro Ximenez Sherry is a wonderful combination. Mascarpone instead of the yoghurt is even better. (If you haven't ever had it, Pedro Ximinez is completely unlike any Sherry you've ever had, and tastes like Christmas Pudding in a glass You can get in Sainsbury's)