I haven't been totally sugar-free, and have consented to the occasional ice cream or ketchup. I have definitely reduced my normal consumption, though, and I don't get those gross feelings after you eat too much sugar.
However, I'm feeling like a person on a diet who has intense cravings where I want to eat all the ice cream in the world! I've been trying to make a lot more snacks myself, to avoid getting antsy during the day and caving. I have two ideas for you, if you'd like to try something new:
Banana ice cream and candied pumpkin seeds.

http://www.food.com/recipe/roasted-pumpkin-seeds-with-maple-syrup-145280
Since my dad makes maple syrup, I have plenty of it at home. I mixed a cup and a bit of pumpkin and sunflower seeds with 1 tablespoon of maple syrup, 1/2 teaspoon of salt, and 1/4 teaspoon paprika. I put the mix on a baking sheet, and roasted it at 425F. I watched them really carefully and stirred halfway through, but it probably was only in there for about five minutes before they were ready. And then I ate them. Lots of them. The sweetness of the maple syrup, the saltiness, the spices...MMMM.
If you got any more corn-syrup free snack recipes, keep 'em coming!