One issue we found is that we were having to move a substantial amount of refrigerated items between the house and the camper. Somethings you can't get away from (milk, eggs, etc) but somethings are better to just have in the camper all the time. I am talking about condiments like jelly, ketchup, salad dressing, etc. There is actually a web site that sells this kind of stuff in individual size packets. It's minimus.biz.
I thought it was pretty cool place to get all the stuff that normally needs refrigeration but through the modern miracles of science can be stored unrefrigerated in the cabinet.
I know some of this stuff can be "found" at local restaurants but I felt like a troll stealing ketchup! The stuff on the website is also expensive but how many tartar sauce packets do you need. I bought 46 individual items for 20 bucks. None of it will ever be thrown out and more importantly it will make one, and only one, trip to the camper. I got several BBQ sauce, several types of salad dressing, cereal, and jelly. In an ironic twist I have enough ketchup and mustard to last!
There are probably other sites that do this (I am not affiliated with them) and this was the first one on the Google search. I gave them a shot.
Just food for thought.