These require a lot of work but are worth the effort! It's not an exhaustive list...these are the ones that get my juices flowing and have inspired me to create a CNC mill.

This had to be added..it's amazing!
682K 4,219
This is well crafted with a lot of detail.
175K 1,518
This is heavy duty!
632K 2,892
Two for the price of one.
290K 1,118
Essential for every CNC mill.
1.2M 1,165
The first one I've seen using wood for the axis.
481K 951
$20 isn't asking too much.
577K 1,888