Some other ideas for high fiber foods that I didn't see above are edamame (I especially like it dry roasted with sea salt, found at most grocery stores, 5 g per serving), blackberries (7.6 g for 1 cup), and ground flax seed (4 g per serving, added to smoothies, yogurt, etc).
I just discovered a few hours ago that a Starbuck's Skinny Mocha has 5 grams in a venti... not sure where it's hiding, but it was a nice surprise when I entered it as a custom food after trying it for the first time.
