Favourite piece of hardware... Probably the old Apple G4 Cube sitting on the shelf behind me. SFF case with bottom to top direction airflow, many many years before either concept became popular/mainstream. There still isn't a PC case in existence that I know of that offers all three of those things: cube case, SFF, bottom to top airflow. The trash can mac pro is a thermal nightmare, even if it is the closest thing to the G4 Cube in terms of form factor and thermal design.
And I like this G403 wireless I bought about a week ago. If it weren't so narrow (I've got big hands) I'd say it's the best mouse hands down. I have to claw it to be comfortable, and I usually palm the living daylights out the mice I use.