Erik,
all in fun…
I totally understadn trying the prepackaged foods because it's probably a fun treat for the kids and I applaud you for working to make the vegetarian kids feel welcome and included rahter than just making funof them like a lot of adults would do.
Here's a few more ideas. I really don't buy a lot of the prepackaged meals (MH. BP, Knoor sides) becasue I find them expensive and loaded with salt and preservatives, but there are a few good alternatives out there.
Someone shared a Mary janes Outpost meal with me that was vegan and I really liked it. It was the Ginger pasta meal. Also, if you're looking for some ramen-type noodles, I like the Thai Kitchen rice noodle ones. They come in a variety of flavors, all are vegetarian and a few are vegan. Also, if you like the wheat flour noodle ramen, a good choice is the Koyo brand. I really like the ginger lemongrass and the miso tofu ones. They are organic and also come in a good variety to please differnt palates. these can be found in and health food store, the Thai Kitchen is also in many major grocery stores. The market at Tuolome meadows in YNP even had them.
You can also get tofu in sealed 10-12 oz. packages that don't need to be refrigerated, which comes in the differnt firmness options, so you can always add it to any other meal your making as a vegetarian protein source. It's a little heavey because it's not dehydrated, but it's a nice treat to have fresh tofu on the trail adn it's very versatile.
have fun!