I usually use 5-7 points for my lunch:

-Bread thins with 2 slices of turkey (1.5 points) - and this tends to fill me up until I get home from work;
-1 c grapes - 1 pt
-WW yogurt - 1 pt
-Chocolate/oats Fiber bar - 2 pts
-string cheese - 1 pt

Find a base protein/fiber-rich food that will fill you up, and load up on low point foods to surround that. I usually put the string cheese in as my comfort food. Granted though, I'm only 3 weeks in on WW, so I'll definitely come back to read/post more!!