Astronomy

Café Press offers more than 7,000 astronomy designs that can be put on shirts, clocks, mouse pads and other items. Looking for a coffee mug with a corny astronomy joke on it? This is the place.

Starry Night Store has among the best planetarium software around and offers a wider variety of programs than other manufacturers. Each program is slightly different, so pick the one that's right for you. These make excellent gifts for people who have equally strong passions for astronomy and computers.

MWT Associates is a vendor of global astronomy tours. Travel packages typically include travel fare, lodging and informational lectures from professional astronomers and academics. Trips are expensive, but the brochures and attendant daydreaming are free.

International Star Registry lets you name your very own star—sort of. The names are not recognized by any scientific body, but you do get a spiffy certificate and map to find your star. Other registries exist, but these folks are the oldest and biggest. There is some disdain for these unscientific registries among hardcore astronomers, so the gift is probably best reserved for someone who will appreciate the sentiment.

Starry Night Lights is nominally a retailer of lighting that helps reduce light pollution and preserve the clarity of the night sky. Most of the products are not cheap, and the majority of the indoor lighting products don't have any apparent night sky-friendly function. It's best used as a place to get ideas for responsible outdoor lighting that you'll probably find cheaper at your local hardware or home furnishing store.