Frozen strawberry yogurt snacks - You can make them by dipping strawberries (halved or whole) in vanilla yogurt (Greek might be best, because it's thicker), then putting on a sheet pan lined with parchment or wax paper and freezing.
Desert - Sweet Couscous with fruit. Just cover about half a cup of plain couscous with boiling water for about 5 minutes until water is absorbed. Stir in a muller light yogurt of your choice, and top with fruit and sweetener.
Pretty and Polished: Slimming World Brownies. Works out as syns in total for the whole tin (including the icing). So you would just need to cut them into however many squares you like and work out the individual portion's syn value.