Answer:
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
I can be thin but not fat; in your body but never on your placemat. I'm always better when I'm fresh but you'll never see me in the flesh.
What do you get when you cross a snowman with a vampire?
I have roots nobody sees. I am taller than trees. Up up I go but I never grow.
Things here are usually tagged with red stickers.
I have feet on my head