How to tidy case fans

[Drake5]

How do you guys tidy your case fans? When they go on to the motherboard headers it just leaves the fan wires across the motherboard

I'd like to put them running through the back of my case but I'd need 4-5 long PWM headers and not sure how that'd work

 

[Drake5]

I have all my fan cables hidden behind the motherboard tray plugged into a PCB PWM splitter.That plugs into the CPU header to control all the fans at the same time.

That sounds perfect can't find one though