On my desk there are at least two computers.
I usually post to Fluther on a linux box (fedora 15) that I built a couple years ago. The goal was relatively low power and a lot of storage so it has 4 TB drives that have aggresive power management built in (they will spin at lower speeds= lower power when idle) and a “Brisbane” AMD dual-core that eats only 45 watts. That has a plain Viewsonic LCD monitor. It has a mouse and a trackball and two keyboards (one wireless) hooked up.
Next to that is a six-year-old Shuttle shoebox computer that I rebuilt less than a month ago. Replaced the motherboard (the old one broke and did not see all the RAM) and put an SSD (solid-state-drive) as the main drive. I very much like the SSD and it made a big difference in all aspects of performance. That box has Windows 7 on it now.
This box has a very nice hi-reso Samsung LCD monitor and a 12-year-old Acer/IBM LCD monitor. It also has a fairly good 5-speaker sound system (great for Netflix movies!)
Sometimes there is a laptop or two on the desk, or my ASUS tablet.
There are wires everywhere on and under the desk. Besides the computers I have power strips into which I plug chargers for digital cameras and other gadgets.
It’s a bit of a mess, but it’s my mess and I know where everything is and I like it !
We have several Macs elsewhere in the apartment, one at the TV, an old titanium laptop at the kitchen counter and a couple of them in my wife’s office.