The BQ PrintBot (£59.00) was designed as a hobby robot — something for parents to build with their kids, where both could have fun and learn. With this kit, and a little programming know-how, your family could easily make a line-following or light-seeking robot.
The 3D-printed robot can be custom made in a range of colors. It uses a Freaduino Uno to control two plastic wheels a couple of light and IR sensors, a buzzer, potentiometer, and an LED. A bluetooth module for wireless communication, and a button for triggering actions is also included.
Note that this is a tiny bot, weighing less than 4 pounds and measuring less than 2 inches across. So it would be ideal for table-top robotics.