My wonderful husband found these documents on the USDA website not long after I received my diagnosis. They are an exhaustive list of the amount of carbs per serving of various foods. I scoured the list, looking for anything that had a carb count in the single digits.
Not long after that, the website switched from showing the information in a .pdf file to making it into a searchable database (much less user-friendly). Thankfully, we were able to retrieve the documents from our computer's history and save them. If you have dietary restrictions, a searchable database is not helpful! Anyway, here they are:
Alphabetical list of foods
List sorted by carb amounts