No room for a real Christmas tree in your tiny apartment? How about a virtual Christmas Tree Light Projector? This fun little gadget shines an image of a Christmas tree onto your wall. You can move the unit closer or further from your wall to vary the size of the image from a few inches to 5 feet. The device works by shining a green LED through a thin wooden plate and requires a 9v battery (not included, natch) to operate.
Available for $60 at RareBeasts Etsy shop. Custom images and colors made on request.