Also...
* Try Spike - it's a no-salt seasoner - I think it's pretty inexpensive too, works well for seasoning veggies. Check around your local health foods store (Whole foods or other) for other seasoners like this without salt.
* Salt substitute - potassium chloride. You can find this next to the salts in the the spice aisle. Use in moderation - in excess, this could be just as bad as salt, but it does a decent job of replacing the salt flavor. Also see low sodium salts.
* be careful with Soy sauce, Teriyaki, tamari, etc - these are loaded with salt!
* other culprits you may not have known about: Breads, bagels, cereals, lunch meats - ALMOST ANYTHING prepared/processed.
* just check labels - i found a brand of tortilla chip (restarant style) made just with canola oil and corn and the sodium is non-existant. (also much better for you than the ones made with partially hydrogenated oil)
* Vinegars make good seasoners too - esp. with veggies and beans.
* Some soups are made with little or no salt. Also, you could prepare a big pot of homemade soup (or crock pot!) (veggies, beans, spices/garlic, etc) and have that ready for easy to prepare lunches.
good luck!