I love dehydrating foods!
I have had success with dehydrating individual things lile peppers and tomatoes and the like as well. But I have also done whole meals- curry, rice and beans, chili, tacos, etc. All rehydrated great with water and heat on the trail.
You can honestly make whatever normal meal you'd make regularly, and put it in your dehydrator. Having plastic trays that fit in it are ideal for soupier content. Most come with a few trays. I like to make double batches of dinners and dehydrate half, since im making it anyway. Once your meal is dehydrated, put it in a ziploc and store in the freezer where it'll last forever.
I have also made tomato sauces and such to add to noodles- often it is suggested adding applesauce or pectin to bind it together into a leather.
Another tip- if you are making a meal, it usually helps to chop veggies and other contents very small so they dehydrate quicker.
One amazing book with a ton of recipes is Mary T Bell's book: https://www.amazon.com/Mary-Bells-Complete-Dehydrator-Cookbook/dp/0688130240