Poles and Throws

https://learn.sparkfun.com/tutorials/switch-basics/poles-and-throws-open-and-closed

Analyze Your Disk Space

http://www.jam-software.com/treesize_free/

Tools for 3D Printing

https://dansuleski.com/tools-for-3d-printing/

Getting Started with Blender

https://dansuleski.com/modeling-rooms-with-a-low-barrier-of-entry/

Applying gradients in Illustrator

http://www.bittbox.com/illustrator/illustrator-101-one-gradient-across-multiple-paths