This is an adapter for the https://www.manfrotto.com/global/pocket-support-large-black-mp3-bk pocket size tripod. I am using 2 of these for my Totem split keyboard.
I created this because I was really NOT going to pay 35 euros on some pieces of aluminum from SplitKB.
The hardware needed is:
It allows 8 positions with the exterior holes.
The mounting to the keyboard is made with the interior 4 holes:
I used on a TOTEM keyboard:
Details for the mounting holes necessary for the bottom part of the puck: