Waaaaaaaaay back in 2006 when I started submitting a historical manuscript, I had an editor respond saying that some of words were too modern. Like "whatnot."
Now, I won't argue that some of my words were indeed too modern. But that she chose that one as an example gave me a chuckle. =)
Whatnot dates to the 1530s, meaning "anything." It's a very literal world, from what + not. Even as a piece of furniture, it's from the early 1800s, named after the items it's meant to hold. I personally love tossing this word into a historical--it's one that feels old, yet is still in occasional use today so is easy to understand.
On a not-word-related note, I'm in one of the areas hit by the severe storms/tornadoes over the weekend, and while we didn't even lose power at our house, my parents are still without electricity, and it's going to take a long time to clean up all the damage from felled trees at my mother-in-law's house--prayers appreciated!