I have an Aukey KM-G9 mechanical keyboard. It’s far from being ergonomic, and i really look forward to switch to a Keyboardio Model 01, hopefully soon. I do a lot of (well, most) things with a keyboard, so this is very important to my fingers and my wrist.
As a mouse i use a Logitech Marble. I don’t use it that often so i don’t really need anything more ergonomic.
Also, if we are talking about ergonomics here, a good chair is very important. And don’t forget to leave your desk for a few minutes every hour. Your eyes and joints will thank you later. Having a workout session at the end of the day doesn’t help this much.