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Logitech has an idea for a “forever mouse” that requires a subscription
(arstechnica.com)
This is a most excellent place for technology news and articles.
There's some OSH designs for trackballs and "ultra light weight gaming mice", not much for the more standard stuff, just like with most mech keyboards, which are primarily for enthusiasts, often with "deck flex" for a "softer bottom out feel" (and shorter life).