I'm not actually hungry mid-afternoon, but that doesn't stop me from wanting a little chocolate something to get me through until dinner.
Here are a couple low-Point favorites:
Fiber One just came out with these brownies in Chocolate Fudge (good) and Chocolate Peanut Butter (very good). 2 Points+ each, they're a good snack. In my local grocery stores, they're stocked in the cereal aisle.
Weight Watchers has been pairing with Whitman's for years to make low-Point candy. They offer peanut butter cups, chocolate covered peppermint patties, English toffee and my favorite, the Turtle-like pecan crowns. The crowns are only 1 Point, a good deal.
I limit myself to a max of 1 a day. If I let myself eat more, the whole bag would be gone. For me they're not trigger-food dangerous, so I can handle them in moderation without too much temptation.