Endi on Twitter: "Perfect home made wrist rest for Logitech G815/915 :) Get 450x400x2mm mouse pad, cut it in 5 pieces, sew/glue it and done. Can try with the thicker 4mm pads.
Amazon.com: Glorious PC Gaming Race Keyboard Wrist Rest Slim - Full Size, Black : Everything Else
Geekria Full Size Keyboard Case, Hard Shell Travel Carrying Bag for 108 Key Computer Mechanical Gaming Keyboard Compatible with Logitech G915 LIGHTSPEED RGB, Razer BlackWidow V3 Mechanical Gaming - Walmart.com
SteelSeries Apex Pro vs Logitech G915 LIGHTSPEED Side-by-Side Keyboard Comparison - RTINGS.com
Amazon.com: Logitech G G915 Lightspeed Wireless RGB Mechanical Gaming Keyboard (GL Tactile) Bundle with Wireless Gaming Mouse, MX Palm Rest and 4-Port USB 3.0 Hub (4 Items) : Video Games
Logitech G915 Lightspeed Gaming Keyboard Review: A Slimmer, Sleeker Option
SLIM WRIST REST PAD COMPARISON for Logitech G915 or Low-Profile Keyboard: Grifiti Slim, MX Palm Rest - YouTube
Logitech G915 LIGHTSPEED TKL Wireless Mechanical GL Tactile Switch Gaming Keyboard with RGB Backlighting Black 920-009495 - Best Buy
Low Profile Palm Rest for full sized keyboard - Suitable for Logitech G915 / G815 / MX Keys | Lazada Singapore
Logitech G915 Lightspeed keyboard review: Clicky, solid, and downright heavenly | Windows Central