If you're raising a future James Bond, your young secret agent needs the high-tech help of a location tracker. Hide the transmitter with a valuable object or plant it on a suspect, then use the hand-held detector to track its whereabouts with ultrasonic sensors. The LED on the detector lights up as you get closer to the transmitter. Great practice for super sleuthers, and a fun way to elevate the stakes of hide-and-seek or scavenger hunts! Requires 2 AA and 2 AAA batteries, not included.

From Thames & Kosmos, for ages 8 yrs.