Original Steel Series Sensei (the one with the onboard profile storage) Still surprisingly working.
I am more and more becoming a fan of the Logitech G305 though, I use them for my other PCs. Cheap and good. Might buy the fancy Pro or G703 and give them a try. I was a big wireless mouse enthusiast back in the day. I used to have an IR wireless ball mouse. Then a series of Logitech wireless mice. I ended up buying new old stock Logitech mediaplay mice, but sadly they are a tad too expensive to justify now, and the rubber is starting to go.
And a Logitech G513 keyboard with Brown switches.
Still not sure if I am a fan. I've used membrane keyboards for so long that I think I prefer them. I have an IBM Model M clone laying around with ZEOS branding. I used that for years as well with a PS/2 adapter. (It does meet my most important requirement, a larger gap between the arrow keys and the other keys. Can't stand it when they are right next to each other, no where to put your pinky finger)