Dry air is what cracks a solid-wood instrument, and a Canadian winter is about as dry as it gets. If you play a Mano, Kohola Deluxe or Nalu, a humidifier that sits in the case is cheap protection. Solid wood is happiest around 45% relative humidity, which most houses won't hold on their own in January.
Every accessory ships free when it goes out with a Honolua Ukulele. On its own, any order over $100 ships free as well — under that, it’s a flat $14.99 across Canada and the US.