Not very related, but it reminds me that there are a lot of people who rack Mac Pros in data centers. Not Mac Mini. Mac Pros. Yes, the cylinder one. I guess it's mostly for graphics and rendering capabilities or when testing requires the original machines. People come up with all sorts of tricks because it is very inefficient - like vents [1] - or this other company who 3D-printed pieces to keep the Macbook Pros open at 7mm (=0,05 banana) [2].

[1] I especially liked this blog: http://photos.imgix.com/racking-mac-pros

[2] https://simbimbo.wordpress.com/2015/07/24/well-im-at-it-agai...