This is a cute and helpful gadget for you parents out there. The grobag egg changes colour to let you know whether the temperature of a room is too low, too high or just right

The grobag egg also works as a soft night light. The egg-shaped room thermometer shows the current temperature. Now if it also would tell the time it would be just too useful.

Amazon sells the grobag egg for £19.95.
See also the Walkabout Platinum Digital Baby Monitor.