You could use "wood carving" instead of "folk art". I ship stuff to Russia sometimes and they are VERY strict. I've had only one package that got "lost" in the mail. It was a small package that contained two flint arrowheads and was marked "FRAGILE" and declared as "decorative stones" and insured for between $40 and $60, can't remember. I lost ONE item of the original paperwork and couldn't make a claim to get the insurance money... even though the Post Office had a record of the postage paid.
So, I make the package as plain as possible; send it during the holiday season as a "gift"; declare it as some kind of art, sculpture, or carving; put it in a reasonably large container so that it's harder to steal; and no insurance.