15" mbp hi-res/ag on stand elevated to bottom of secondary lcd, screen open, typically with email, skype and task management app open there
HP 24" IPS LCD
pckeyboard.com 'customizer' - this is basically a USB version of the IBM Model M 'clicky' kb with the extra keys on it. Not quite as durable as the original Model Ms (I still have a few ~20 years old that were used until somewhat recently with adapters

) but pretty good.
Logitech Trackman Wheel, USB
kb and mouse go to a hub, single plug into the mbp
gig ethernet to a combo NAS/switch setup in the home office, airport left active for when I occasionally unplug from the desk.
Why not BT or wireless input devices? Because they don't make a Model M keyboard in wireless, and why change batteries when there's no need to? I use a duplicate setup in the office. Depending on travel duration, I either don't bring anything with me, or just stuff the Trackman into my bag. When I get around to it, I probably will pick up the latest iteration which is the logitech m570, simply because they don't make a corded version and it will be slightly more convenient to just leave in my travel bag - it's not BT, uses Logitech's proprietary wireless with tiny dongle. I care more about productivity than having an Apple k/b with inferior feel to the one I have already, although the next addition with either be a magic trackpad + pogo stylus or a wacom tablet, undecided at this point.