Today, learning about science and tech is all play. Well, and maybe just a little work. You don’t need to be a fab-lab rat to work this simple 3-D printer. Kids can design their own objects using free software or print a predesigned trinket. | $250 (Ages 14+) It’s no Retina display, but Kano’s 16x8-pixel grid still dazzles. Make the LEDs glow using Kano’s simple web coding app. Program the screen to display weather and stock data, or just create pixel art.