How about a few of these little robot buddies sitting on top of your rack, instead of in it? 1×3 passive mults with mandatory robots, and optional magnets for easy stacking/attaching.
4 channel passive multiple.
Durable plastic enclosure.
High quality gold-plated PCB-mounted jacks.
Fully serviceable (just undo two screws to access the jacks).
Optional Super strong rare-earth neodymium magnets on both sides of the enclosure. The magnets allow the hubs to be stacked or attached to metal or magnetic strips on your case. They can even attach to screws.
The Deluxe 10 Connection Flying Bus Cable makes connecting power to your module a snap and a reality, especially if you have 10-pin powered module that has little room around the power pins. There are 10 Male Shrouded and Keyed Eurorack connectors for distributing power to your modules. There are also two keyed 16-pin female connectors for powering the cable and for daisy-chaining another flying bus cable (although you could connect this end directly to a module that takes 16-pin power (or 10 if there is room).