T.K.
There are a lot of differant snack mixes you can make with dry cereals, pretzels, nuts, berries. I worked for a Hindu women that had a whole cabinet full of differant varieties. She would use puffed rice, puffed whaet, any cereals that were not sweetened. She would throw together a bunch of crunchy stuff and spray with a shot of butter flavored pam, then toss in a spice mixture. Sometimes a curry type deal. Sometimes chili powder and garlic, some were sweet, cinnamon and sugar. Once she had it all coated she would lay it out flat on a cookie sheet and bake on low until everything was slightly toasted. These would hold up well for your purpose.