Bought this chinese stuff. "Tiger eSports" mouse feet for both G403 and G703 and a cheap paracord... : r/MouseReview
Amazon.com: 2Sets Hotline Games 3.0 Plus Rounded Curved Edges Mouse Feet Skates Compatible With Logitech G703 G603 G403 Gaming Mouse feet Replacement (0.7mm,Smooth Glide,Pure White PTFE) Professional Mice Upgrade : Video Games