Don't beat yourself up about having a little bit of cheese or sour cream in the evenings-you are allowed/and even supposed to eat dairy products.
I too find myself grazing/snacking in the evenings, so I just have a really light lunch(like a WW soup and a slice of bread) to save points for an evening treats. Which is something I'll be doing today as my GFs parents invited me for a roast dinner so Points are a bit out of my control.[why do they always invite me the night before weigh-in?]
Low Point treats are:
1 Jaffa cake:1Point
1 single Milky Way bar :2 Points
1 Rocky bar: 2.5 Points(the caramel ones are 2 Points)
1 25g bag of Walkers Baked: 1.5 Points
Random:
WW bread is boring and expensive(I've tried their bagel, pitta and wraps and didn't like any), I buy 'Nimble' bread instead.
If you don't want to buy a seperate bread just for you, buy 'wholemeal' bread for your family as multigrain has lots of points.
Crumpets are relartively low in points-2.5/3 for 2 Crumpets dep. on brand
Porridge made with water/skimmed milk is a good filling breakfast fairly low in points. I have mine with some raisins(don't forget to point them) and sweetener.