I needed another corded mouse and this time around I thought of @PKL@mastodon.social and @pronk@mastodon.social instead of Logitech's shareholders. These guys make open source mice among other open source hardware under the brand Ploopy. You can order one from them, assembled or as a kit, or you could print and build it entirely by yourself.
The mouse itself is pretty great. Coming from a long line of Logitech (MX518/G5/G500/G502), it's a bit larger than what I'm used to but I think I'm getting accustomed to it.
Here's another shot of it:
I keep thinking I should give a ploopy a shot but I've increasingly grown to like/need vertical mice and, like most ploopy related efforts, it is mostly "you CAN do it" with nobody ever having even tried because it requires pretty hefty redesigns of almost every part to mount things correctly.