Thingiverse, created by the three-dimensional printing company MakerBot, is an online community for "discovering, making, and sharing 3D printable things." For K-12 and university level instructors with access to 3D printing technology, this website also provides a large collection of free lesson plans for incorporating 3D printing into the classroom. These lessons can be browsed by grade level and subject (including Science, Math, and Engineering, as well as Art and History), or by compliance to national standards (including the Common Core and Next Generation Science Standards). Each lesson includes detailed instructions, and many also include accompanying videos to aide in incorporating these resources into the classroom. These engaging, hands-on projects would also make great additions to out-of-school educational settings, including libraries and enrichment programs.