Design
When designing this organiser, I gave the large hole some extra margin so it could fit larger cables later on, as well as accomodate my current power cables and their plugs. I also designed a 'hook' system to catch cable heads through five smaller holes, keeping them tidy when not in use.
Since the hooks sit inside the holes rather than protruding externally, I printed in PETG and oriented the organiser flat on the printing bed so layer lines reinforced the internal catch rather than running across it. This let the catch handle cable heads being dropped in quickly and repeatedly without wearing down or cracking over time.