Stand Up Desk Store Clamp-on Adjustable Height Desk Shelf Monitor Stand (30") : Target
Dolle CLIP 0.75 in. Black Decorative Shelf Bracket (2-Pack) 17952 - The Home Depot
D-4457 2U Clip on Rack Shelf On General Devices Co., Inc.
Clamp-on Monitor Riser Shelf – VIVO - desk solutions, screen mounting, and more
Amazon.com: 3" L Clear Wood Shelf Label Holder Clip On to Shelves 5/8" to 3/4" Thick, 20 Pack : Industrial & Scientific
Shelf Clip Brackets | The Container Store
Amazon.com: Modern Innovations Bedside Shelf for Bed, College Dorm Room, Bunk Bed Shelf for Top Bunk, Clip On Nightstand Tray with Cord and Cup Holder, Bunkbed Caddy for Table Storage (Black) :
GLASSLINE Standard Shelf and ATLAS Clip | Shelf & Co.