nathanwalden, I am so sorry to learn of your situation but very proud of you for sticking to your convictions and staying on-plan!
All of the ideas above are great! I just wanted to add that if you could buy a small microwave (about $50) or something like the below (about $25), I would think that one of these items would be very beneficial for you. Keep in mind that potatoes are really a perfect food. They have everything you need and can be topped with a rotating variety of items--dried herbs and a little salt, veggies, salsa, ketchup, mustard, BBQ sauce, etc.. Also, if you had a microwave, not only could you cook potatoes, oatmeal, and rice, but could cook the steamer veggies in the bags (often under $1 at Wal-Mart and Aldi in the freezer, but you may not have access to a fridge/freezer).
I have cooked cut up potatoes in here, but had to keep adding water. It boils very fast, so you really can't walk away from it:
https://www.amazon.com/gp/aw/d/B07XFCRG ... JlZGlyZWN0If you don't want non-stick, this is an option:
https://www.amazon.com/gp/aw/d/B07XXVQL ... UTF8&psc=1We had one of these years ago when we traveled:
https://www.amazon.com/Proctor-Silex-48 ... 297&sr=8-4 It was perfect for boiling water for Dr. McDougall's Right Foods Cups, another option, but the cups need either boiling water (preferred method) or microwave. Here's the link to the cups
https://www.rightfoods.com/ , but they can often be found cheaper in stores. Also, the entrees often have more sodium than you'd want. Simply put less of the seasoning packet in and adjust to taste.
Another option is a small slow-cooker like this for $15.
https://www.amazon.com/MST-250XS-Electr ... ock&sr=8-3 Oatmeal, beans, lentils, soup, etc. can be cooked in here with yummy results. The 1+1/2 qt. I find is better than the 1qt.. Of course you could get a 3 qt. or larger, too, but they don't work well if they're not at least half filled. Just keep in mind that it is a slow cooker, not a quick cooking device like an Instant Pot. For about $55, this would be an all-around option
https://www.amazon.com/Crock-Pot-Multi- ... 69&sr=8-11 that can slow cook, pressure cook, and simmer like the first item I linked, but it has more room and you could easily cook pasta, vegetables, etc.. If I could only by one item, it would be this. Yes, it's more money than the other cooking pots mentioned above, but it's really a one stop shop. This particular item is non-stick for easy clean-up, especially if you don't have access to a kitchen. If you want a stainless steel cooking pot, Instant Pot is the brand for that.
Good luck to you; you can do this!
Please keep us posted on what you end up doing and/or if you have more questions.