Just Tomatoes has some organic products and some nonorganic. The organic is clearly marked, but most stores don't carry the whole product line. You can see the full lineup on their website at
Just Tomatoes, ETC.!
I also know of a bird-supply place that sells a lot of the organic line at
Wranglers Roost Bird Toys, Parrot Toys and Parrot Foods It's handy for people who want to order Just Tomatoes and other bird supplies and only have one shipping fee.
About home dehydration: the texture isn't exactly the same as what you get from Just Tomatoes. Some items (like corn and peas) come out a lot harder and might be too tough for small birds. For that matter the Just Tomatoes carrots are too hard for my cockatiels and Kaytee's dried carrots were more manageable. It's become a moot point since they finally started accepting fresh carrot!