Mom successfully froze corn on the cob, but I think she cooked it first. You might want to look that up somewhere. I can't exactly go ask her, and I don't remember. I do remember it was good.
I have a dehydrator. There are places on the web that can give you the latest updates on drying. I know sliced tomatoes, bananas, fruit rollups, were all easy to do. I think mixed veggie chip slices mildly seasoned would be delicious. I would dry them seperately, then mix. If they didn't work out for snacks, they would be a great way to store fresh veggies for soup.