200 PCS 6 Inches Black Reusable Cable Ties, Adjustable Cord Straps, Cable Organizer, Cord Wrap and Hook Loop Cords Management,Adjustable Cord Ties for Organizing Home,Office,Garden,Data Centers

You won't be able to hide the cables completely, but I don't think that's what you're going for. Start by identifying the different cable bundles. For example, all those coming out of the case; the thin cables on the upper shelf (do they have to go there?); etc.I would push the case back so it aligns better with the upper shelf, and somewhat hides its cables. Your next step is cable trays and/or conduit. Since this is glass and I assume you don't want to drill into it, you can use clamp-on trays or self-adhesive conduits.Here is an example of a clamp-on tray that fits glass:https://www.amazon.com/Univivi-Under-Desk-Cable-Management/dp/B0G7HH41FKWhen choosing one, make sure the clamp can close to the thickness of your glass and that the arms are cushioned with rubber or similar material. Here's an example of a self-adhesive cable management tray that fits glass: https://www.amazon.com/dp/B09J5HH2LR You will need some Velcro zip ties and maybe some sleeves (make sure to choose a sleeve wide enough for your bundle), but that's up to you (how tidy you want it). Good luck.