I bought jewel tone foil origami paper and we're incorporating the cranes both on the tree:
And on our advent calendar - or rather, advent branch.
David and I wrote Christmas Bible verses on the backs of the origami paper; every day we choose a paper, read the verse, then fold a paper crane and hang it on our advent branch.
Along with paper cranes, we decorated around blues and silvers, including silver snowflake ribbon on the mantles.
The tree also has the glass ornaments that David and I made when we were dating.
What's your tree look like this year?