Unlike many 3D printers out today, MakerBot 3D printers are affordable, costing around $1100 versus $25000-$250000, and open source. A MakerBot can even print its own parts! There are endless opportunities when it comes to printing with the MakerBot, you can print toys, accessories, tools, and more. It's really awesome! You can print almost anything if you have a 3D model of it, all you would have to do is scale it down and convert it to instructions the printer can understand. The printer then basically squirts out plastic in the shape of your model. If you aren't great with 3D models, you can find thousands of open source 3D models on the website Thingiverse that you can use with the MakerBot.
I would really love to get the printer we have set up so we can print out some basic models with it!