Searching for cheap 3D printer? Just try 3Doodler. Unlike other 3D printers, this isn't a tabletop rig hooked up to a computer. Instead, it's just an unusually chunky pen that contains all the hardware, software and materials it needs inside the body.
To use the 3Doodler, you just use the pen to draw in the air (or on a piece of paper, if you're making a two-dimensional piece), with the actual product automatically extruding from the rear end when you press a button (it can produce the product as you draw if you keep your finger on the button the entire time). Granted, it's going to take some imagination and creativity, but it does allow you to get started producing 3D-printed products sans the need to learn 3D modeling software tools.
You can draw flat on a piece of paper or follow along with stencils, if you're not all that artistically inclined. The real trick, however, is writing upward, essentially drawing in the air. There are two buttons on the front of the device, which let you control the speed of the extrusion. The higher speed works just fine on paper, but if you want to hit that third dimension, it's best to slow things down, allowing the plastic to solidify as you build up. It's also possible to create three-dimensional structures by printing out 2D sides and essentially welding them together afterward with a bit of plastic, as the company did with its rather impressive Eiffel Tower model.
Currently, 3Doodler is collecting backers on Kickstarter, where the project is fully funded many times over. You can reserve yourself one starting at $75 (pen plus two bags of mixed color plastic).
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