Lovely! But if the rustic box isn't your style? A wicker basket. A silver tray with lower sides. A glass bowl with moss up the sides to obscure the "mechanics" of the arrangement. A decorative ceramic serving dish (I have an Italian one I could use!). I love the subdued green and white look.
Advent Calendar (the link's expired, but pinning this for the idea to diy) Grandkids are needed, but not too soon, so that we can make these. They are embroidered with their names at the bottom of the tree.