SFF PC built out of legos with a few internal parts which were 3D printed.
Front IO: https://www.amazon.com/gp/product/B01A5DGJQA/ref=oh_aui_search_asin_title?ie=UTF8&psc=1
power button(built into a lego): https://www.mouser.com/ProductDetail/Schurter/13019314?qs=tGaZrb6HVSbFYC4o6ZpHBA%3D%3D&gclid=CjwKCAiA8OjjBRB4EiwAMZe6y6tatE6fH0rDOJLI57T9Wj9xtmAUZ9rJAGyzgNwcA0vjS7xquLmfmRoC1CoQAvD_BwE

Dimensions: h:243mm w:144mm l:334mm/h:9.5in w:5.67in l: 13.15in