I got this idea from many sources. If you google thanksgiving tree, you'll see a lot of examples. I used a little Christmas tree that we weren't using.
Then I cut out from colored paper a whole bunch of leaf shapes. For a family activity we wrote down the things that we were thankful for. Kewpie colored a few (and wrote down what she was thankful for.)
It was a good experience and is a great reminder. We have it in the entryway.
Next time, I think I'll use a leaf template instead of cutting out shapes freehand. Not all of them look like leaves. And I'll include more that we can write on later, as new things we're grateful for come to mind.