Bit late, but as promised:
This is a Shinobi case. The best way to do this is when you have both side panels off. My HDD cages are completely toolless, which means that *every* bay has these plastic clips on them. These require removal in order to mount a drive, however, you can also just take them off, not mount a drive, and well... Just leave them off!
Doing that will give you (in my case (no pun intended)) 3 round holes and 2 more different ones:
You find the holes closest together, poke a zip-tie through one, reach from the other side and push it back through the other hole. You then push your cables to the HDD cage and pull the zip-tie to secure it all into place.
In this case I've done a quick mock-up build for you and I found that I only had 2 Sata cables and a fan cable that I needed to tie up there, so I grabbed a random Sata power cable bundle and threw it in there.
As you can see, the HDD cages are rather small and therefore offer a lot of space between the cage and the side panel:
If you find your zip ties are too short, you can easily tie their end to eachother and so creating a longer zip tie. You could also tie cables to other cables that are already tied into place
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