TOP SECRET

She can create touch-activated inventions to protect her piggy bank, hide possessions and catch snooping siblings in the act.
Rule Your Room Kit 
littleBits. Ages 8-12.
$99.95, littlebits.cc

BOTS FOR TOTS

Your mini scientist links colorful gears and goofy faces to create the perfect robot masterpiece.
Gears! Robot Factory Building Set 
Learning Resources. Ages 4 and up.
$39.97, amazon.com

ODE TO CODE


Your little programmer codes apps, music, games and more with this DIY computer (bits, boards and all!).
Computer Kit 
Kano. Ages 6 and up.
$149.99, kano.me

CHAIN REACTION


This kit lets him launch a car using things like a balloon, bowling ball and tiny chicken eggs.
Rube Goldberg-The Speeding Car Challenge 
Wonderology. Ages 8 and up.
$9.99, target.com

COOL CARS


Young engineers build and program 20 plus race cars and games using wirelessly-connected blocks.
Sam’s Curious Cars 
SAM Labs. Ages 7 and up.
$199, samlabs.com