My wife thinks that the turned boxes would compliment the jewelry and
might sell
well there if priced in the $5 to $15 range..

How in the world can you sell a well crafted box in the $5 to $15 range?
Granted the wood is probably free but you will probably spend the better
part of an hour making it. Not just the turning time. Don't forget the
preparation time before you get it on the lathe and the time spent finishing
it.