Hmmm, sweet potato - interesting.
It really depends on where I'm going and for how long. If I'm going to work, forget it - I bring a TON of stuff. Salads, yogurt, fruit, veggies, water, tea.
But if I'm just going to do some shopping or something - well, let's see.... A baggie full of raw string beans. And I too could care less what people think about me. I whip those string beans out with no shame whatsoever. In fact, I'm quite proud of them
. I also usually have a clemintine and a lady apple. I always have gum with me and sugar free sucking candies as well.
If I'm going on a longer excursion, I bring along a frozen fat free/sugar free yogurt and a little bag of Fiber One.