If the yellowjackets are bad, like it may be this fall since we had a mild winter, I carry a full head net to keep those vermin off my face.
For a deer, if you're going to head right home...drag it out whole or cut in half and tie it to a packboard...then skin the deer at home. Get less hair and dirt on the meat then skinning in the woods. If you do decide to skin or bone out your deer in the woods, I carry several little space blankets. They're very small when folded and cheap! Spread one out and they provide a nice clean area to lay meat. I always carry two of those when Im elk hunting.
A small pocket knife will work just as well, if not better for butchering a deer!
Get some baby wipes and put in a zip-lok bag. Besides having them for the obvious, they work great for cleaning your hands after field dressing if there isn't a creek handy.
Just use caution while cutting the windpipe, have cut myself more times then I can count when I get rushed in that area.