DIY Ikea Hack: A Genius Wall-Mounted Wooden Organizer
Wall organizer from IKEA for ~$60 (parts list in the comments) : r/MechanicalKeyboards
Amazon.com: YOKEPO Pegboard Combination Kit with 4 Pegboards with 15 Accessories Modular Hanging for Home Office Wall Organizer, Crafts Organization, Ornaments Display, White | 22" x 22" Peg Boards Wall mount :