Something i'm crazy about at the moment (also work in office environment)
1 tub of low fat cottage cheese (plain)
1 sm tin of pinapple pieces (in own juice)
8 wholewheat crackers (water biscuit type things)
I just literally open the cheese and scoop some with the cracker and eat, once about half cheese and all all crackers gone, I mix in the pinapple pieces (drink the juice first) and hey presto you got desert.
Good times, high in protein, good carbs, and enzymes!