Has appeared in comments, but deserves its own thread: the MX510 Logitech mouse. Mine is approaching a decade old; still functions perfectly. : r/BuyItForLife
Amazon.com: Logitech MX 510 Performance Optical Gaming Mouse - Blue : Video Games
Logitech M510 Review - RTINGS.com
New Shell/Cover case +feet Replacement For Logitech MX518/G400/MX500/MX510 Mouse | eBay