Homestar Aqua Bathtub Planetarium

The Homestar Aqua Planetarium turns a lights-down bath into a small stargazing session, without requiring you to share the sky with actual weather. This white, globe-shaped projector sits on the tub edge and uses an LED to cast pinhole-style stars around the bathroom. Adjust its angle, dim the lights, and let the ceiling do something more interesting than loom over you.

It runs on three AA batteries, so there’s no power cord to arrange beside your soak. It can handle splashes, but this is the tub-edge kind of planetarium, not a floating bath toy. Keep it out of the water. You also get a fixed star pattern rather than interchangeable picture discs.

For the person who treats bath time as protected calendar space, this is an easy gift to give. Nothing about the tub or the water changes, only the scenery, which gets considerably better. No need to turn a soak into a whole production.