I have my laptop with an old 19" CRT plugged in as a 2nd monitor. (I haven't replaced anything in the last 5 years, 'cause school makes me poor.) I use a wireless mouse and keyboard so that the monitors are at eye level, but my elbows are in a relaxed position.

When grinding:
I put the lobby on the extra monitor. I play 4 tables tiled on the laptop screen, with Placemint keeping everything from overlapping. I keep a hands chart in the corner, broken into 5% bands up to 45%, using resistor code for the color scheme (which, bikes would be happy to point out, is kinda gaaaaay).