Available as an assembled Module and as a DIY project.
This Module is currently available.
Six Switch Expander Module
SW6 is a passive expander module used to easily toggle reverse-side module functions that are typically only available by removing the module and toggling jumpers. This module features six DPDT switches with pin headers that can be connected to other modules with reverse-side jumpers.
These merchants probably sell this module. Huh?
Foxing Hour SW6 - Six Switch Expander