Aw buddy it's okay, no one seems to mind. Just pick up your leaf and move on with your day, no need to make a big deal about it.
You almost can't even see the actual tree here in the sea of gingerbread and lollipops and other sweet goodies. I'd love it if Christmas trees were edible. We'd be nibbling well into March and have no waste leftover to sit all sad and dry on the curb.