There are a lot of diet bars/protein bars on the market. These are great for on-the-go meals or snacks (just don't eat too many--no more than one or two in a day). Check the labels carefully--Atkins makes some tasty ones with good nutritional content. Some brands can be high in fat, sugar, or both, so avoid these. Look for high protein and fiber to nourish your body and make you feel satisfied.
I have two favorites. One is in the Atkins Endulge line, a nut chew bar. Tastes just like a Snickers (as long as you haven't had a Snickers recently). The other is Slimfast chocolate mint crisp bars (sorry, don't have the exact name). Kind of hard on my TMJ, but yummy!
I rode my horse today for the first time in over a month. We just walked on a trail ride, but it felt so good to be up there again!