a good trail mix would be a step in the right direction. just make sure if it had dried fruit that it's not coated in sugar (who came up with that, the diabetes industry?). trader joe's tempting trail mix is awesome. it's probably the least healthy mix they have but it's good and a helluva lot better than reece's anything.
Avoid corn syrup no matter what dfk says. Also avoid asparthame. That shit will kill you all over the place.
Fruit is always kick ass, but make sure if you eat fruit with a high glycemic index (like pineapple) that you balance it out with a low glycemic (like blueberries). A chart of glycemic index ranges for fruit is easily googleable.
When I worked in an office, they had candy and junk out the ass, so i brought in those tangelo cuties from trader joe's and carrots. I find raw carrots to be a snooze, but when you eat one with a sliver or orange or tangerine, it's like you're eating some sort of tonic.
veggies I like eating raw are cucumbers, snap peas, and red peppers. And drink lots of water. it's good for the body and makes you less snacky.
organic fruit leather is good from time to time.
organic chocolate bars beat the shit out of candy bars.
trader joe's chocolate dipped macaroons are insanely good and only have about 80 calories a piece. their white cheddar popcorn is addictively good and very low on calories, too, if you can avoid eating the whole bag at once (which I rarely can). For stuff like that, put some in a bowl. if you're digging straight outta the bag, you'll never stop.
hope this helps.
