In my Jiawen Galaxy Projector Light review, I discovered what makes it an excellent value for money, even though it's not strictly a galaxy projector.

Meller Optics, Inc. has introduced custom fabricated sapphire prisms that bend, split, or reflect light but are resistant to scratching, and transmit from the UV to the IR.

The glass dome from flush-mount ceiling lights works perfectly as the bowl for a bird feeder. Just add some hanging chains ...