Keyboard: Gateway SK-1510
This is the best keyboard I've ever owned. Maybe about 10 years ago now, I needed a keyboard. All I did was go on eBay and try to find something that looked decent at a low price. I guess I lucked out. I got it new old stock. This thing has stood up against time. I've been pounding away on it for about a decade now, none of the lettering has faded at all! All the keys still work great. I've thought about picking up another new old stock one some time just to keep as a backup.
The only problem is that it uses PS/2. Luckily, my i7 mobo that I built a few years ago has a single keyboard PS/2 port. But I'm guessing my next build (years from now) will not have one.
Mouse: Logithech MK310
If I've had my keyboard for about 10 years, I've had this mouse longer than that. Aside from looking worn, it functions just as good as the day I got it. This is the mouse that made me a slave to browser buttons. Other than that, what else can you say about a mouse?