Six odd and crazy technologies at CES

Updated 4:46 AM EST, Tue January 7, 2014

Story highlights

New technology is previewed ahead of the Consumer Electronics Show in Las Vegas

Fun-sized drones and smartphone-controlled racing robots are popular

Tiny sensors can be used to track fitness, sleep, air quality, UV rays and car key location

Las Vegas, Nevada CNN —  

Smartphones can control drones, speeding robots, cameras and the temperature of your master bathroom. That’s just some of the technology on display in Las Vegas this week at the annual International Consumer Electronics Show.

The massive show doesn’t kick off in earnest until Tuesday, but some companies gave a sneak preview of their gadgets at the CES Unveiled event Sunday night. The technology at Unveiled tends to skew small and fun, and many products are from start-ups instead of major companies. A few are already available but most are scheduled to come out a bit later this year.

Among the usual headphones and speakers, we found some interesting gizmos. Some might go mainstream, others will be copied by major companies, and some are just too strange or niche to make it outside of a select group of tech enthusiasts.

Racing robots

Smartphone-controlled toys are popular, especially the rugged rolling robots that show off by jumping, spinning and speeding around.

Sphero follows up its smartphone-controlled ball with the programmable Sphero 2B,