Hello, of course we have that too.
I'm glad a Spine tip worked exactly as intended: getting you curious about a particular aspect of Spine you could also do!

Here's some resources about meshes (the third one features several cubes):
Blog: Mesh creation tips: vertex placementBlog: A taxonomy of meshesBlog: Mesh weight workflowsHere we explain how this same setup was used on heads:
Owl example: HeadMix and Match example: Face controlWe also show this technique in several occasions during lives on twitch, here's the page that collects them all:
Spine: Twitchhint: If you search for "head control" or "2.5D" in the page, you'll be able to find the exact moments during the streams where these explanations take place, plus, there's also several examples you can download.
