Small Wire Cable Clips Telephone/TV/Internet/Phone Wall Tacks for Leads 3.5/4mm | eBay
Amazon.com: Mini Cable Clips 3M Adhesive, Multipurpose Cord and Wire Organizer for Cable Management Mini (12mm x 9.5mm) - 100 Pack Bundled with 10 Bonus Reusable Cable Ties (White) : Electronics
hanging - Attaching small, nearly zero weight cable clips directly to drywall without anchors - Home Improvement Stack Exchange