DIY Romantic Star Projector via INFMETRY
For $22, you can project a detailed star map in a room:
This star projector project a map of the heavens onto your ceiling and walls with thousands of stars in random order.
Featuring a rotating base with compass-point alignments, it’s possible to set up your AstroStar by aligning it according to your location and the time of the year, so it can project a map of the clear night’s sky all around you. You can also change it to the accurately track movement of the heavens as the year progresses.
More information and photos can be found here