Well, if I could have ANYTHING for Christmas, I would probably ask for a new telescope. I currently have a 4.5 inch aperture, but for $400 I could get a similar telescope that has an 8 inch aperture. That's a bit much to ask for, but not completely unreasonable. Alternatively, I could just get a couple hundred dollars and blow it all on video games. That would work too. A microscope was another thing I considered, since a decent one would only cost like, $150.