The toy company WobbleWorks put up a Kickstarter page back in February to fund its 3Doodler pen, a fun device that allows doodles to expand beyond 2D surfaces. The goal was to raise $30,000 to launch their product. By the campaign’s end, however, the company had garnered over $2.3 million in donations. The pen works by heating up and dispensing a thin plastic filament that cools down quickly to create hardened structures. It’s like drawing with hot glue, and each one-foot stick of plastic can provide 11 feet worth of doodles. 3Doodlers are still not quite ready for mass production yet, but they are available for pre-order.