Natural Oak Acoustic Wood Slat Panel (Light Gray Felt / Black Wood) — Acuslat
Peel 'n' Stick Tiles, Autex | Whiteboards and Pinboards
Amazon.com: 12 Pack Self-adhesive Acoustic Panels, Hexagon Sound Dampening Panels, 14 X 12 X 0.4 In Sound Proof Panels for Walls, High Density Flame Resistant Sound Absording Padding for Recording Studio, Office :
9mm DIY Acoustic Panels - Cut to size - Mumble by Design