I have the A214HW and find the cabinet under the sink holds a lot. I bought one of those cabinet dividers similar to this - have to measure to be sure it fits. I bought mine at Walmart.
https://www.amazon.com/ClosetMaid-34...0AH6TQYJZBJSW6
Underneath the divider I have aluminum foil, dawn soap, kitchen towel and wash rag and coffee filters and a few other small things. On top of it, I have a Tupperware marinade sealed dish that holds knives, wine opener, and cooking utensils. On the same shelf pushed to the back, I have a 10" cast iron skillet with a small nonstick skillet and a small sauce pan inside of it.
In my microwave, I have a basket that holds paper plates and coffee cups and plastic cups and plastic forks and spoons. I'm all about convenience!
In the cabinet under the microwave, I store my hot water kettle, as well as, trash bags.
I do find it hard to keep it all neat, but camping is so much fun. Enjoy!