Age 3. Smart Cycle
Like a video game, the Smart Cycle from Fisher-Price sends children into a make-believe world full of quirky characters, but it can't be played while sitting on the couch. Plug the tot-sized stationary bike into the TV and children can pedal themselves along, developing problem-solving skills and learning to identify numbers and letters along the way. Recommended for children ages 3 to 6; $99.99.