I have a few little ones I've been doing (despite my non weighing promise, I have weighed once and lost 5lbs) and don't seem to be effecting me too much.
1. I didn't syn my muller light dessert which should have been 5 syns. because it was 99 calories (I do log my food on myfitnesspal everyday, and it does tell me the calories) and I was on 1100, so didn't syn it even though I should have.
2. I have added 50ml to my milk allowance because I can't handle skimmed milk (I don't even like milk that much, but it tastes like water!) and my coffee machine has pre-set amounts 2 lattes if 50ml more than my milk allowance, I don't have two everyday, but I've not synned it.
3. I will also switch to calorie counting to allow for a meal out, I find it easier to get the exact calorie count then work out the syns.