I just love these threads because this is the kind of information that I craved when I first got my RV. I had no idea what it was like to pack to get ready to travel in an RV, and as a result, I had the most unrealistic expectations about what I planned to include in my RV kitchen. We have become so much more frugal, realistic, and organized. Now, I question every purchase that I make or the RV. How will I use this? Is there another tool that I already own that could work just as well if re-purposed? Can this tool perform double duty? Is it a good value? I also question aesthetic value. Just because it's built for function doesn't mean it can't be pretty too. For example, when I was looking for a serving tray to carry drinks or food in and out of the RV, I found one at the $1 store in the shape of a flip-flop and it is perfect for all my needs, and it still looks cute after 2 season's worth of use.
I have lined all of my cabinets with the non-skid cabinet liner. I also use squares of this same liner in between my dishes. I have Corelle dishes and don't line between each dish, but each type of dish. We put the 4 platters on the bottom, then a square of cabinet liner, then 4 pasta/entree salad bowls, then more cabinet liner, then 4 cereal bowls. We also pack the cabinets very tightly so that things don't shift while we're moving, and loose items are stored inside the cabinets in baskets. Extra rolls of paper towels take up space somewhere in your RV, might as well stick them in among the pots and pans to keep them still and silent. Since our RV is a class C, we don't want to hear the rattles and clanks of loose items in the cabinets. My bakeware (muffin pan, cookie sheet, loaf pan, brownie pan, and cake pans) is made of silicone for it's quiet travelling capability and it's ability to be folded and stuffed into one small cabinet above my microwave along with my serving trays and placemats.
I bought a few things that really were designed specifically for small spaces. I have collapsible mixing/storage/serving bowls that are also made of silicone. I have a collapsible dish drainer that fits perfectly in my second sink. I also have a collapsible colander that fits across the sink. They all store away neatly beneath the sink with the paper towel holder and utensil crock when we are under way.
I would give you a list of everything in my kitchen, but everyone's list would be different based on their family's lifestyle. I can say that, so far, I haven't run into anything that I really needed that I haven't had in my RV kitchen.
Finally, you need to remember that whatever you pull out is going to have to go back up when you get ready to roll, so keep that in mind. I can have the slide in and the inside of the RV ready to roll in 15 minutes or less.