Jan Bláha aka swift502 shared his Krtkus 62, an open-source ortho keyboard with, well, 61 keys. This low-profile board features an extended 5x12 keyboard with 2 extra keys, but because of the fixed 2U spacebar (without stabilizer btw) there's no 62nd key.
The design is intended for ortho layouts with a shifted number row, allowing for the placement of the delete and tilde keys above their usual spots. PCB is designed in Kicad. Case is designed in Blender – Jan.
Naming? Krtek (The Little Mole) is a household name and part of popular culture in Central and Eastern Europe, thanks to the Czech cartoon by Zdeněk Miler. Krtkus must be an affectionate form of "mole" and a nod to this well-loved character, as the silk screen of the PCB suggests.
I tested KBDcraft's brilliant Israfel, a 50% unibody split with an adjustable angle, made of LEGO. It's impressive and offers a huge bang for your buck. Flock to the store, folks!