Case is made from 4 layers of 3mm laser cut black acrylic. All text is engraved and filled with white paint.
Buttons are cut from the same material, and they are mounted with double sided tape to the top cover (each button is actually a sandwich of two buttons and double sided tape – it touches a little those small switches on board). Smaller light guides for diodes are made from elastic light pipe, cut with Xacto knife and flame-polished, bigger ones are just 3mm light guides I had in a drawer).
Get a Logic Sniffer for $50, with free worldwide shipping.
Via the forum.