https://www.modulargrid.net/e/takaab-vlh-vco-s-little-helper
...Wishbonebrewwery -- Takaab could work but I REALLY dont like 2hp modules. fingers are just too fat...
-- Scarfmeisteras a workaround i have most of my 2hp modules combined with small blank panels on at least one side.
this particular module does not have any potentiometers so probably there is no need for additional space.i never have heard of this module but reading the description made my curious - i am going to search for some sound examples...
-- modular01
That's exactly what I do, or leave a 1hp air-gap between 2hp modules. Though the Takaab module is just something you can hide away and leave patched as chances are everything that comes out of it will be sub-mixed back into the original or another signal before hitting a VCA or Filter.
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.