My gosh, all those pictures of clean shops!
The rolling cabinet is a great idea, but my Unisaw is situated such that that idea wouldn't work form. (My dust collection piping runs under the right-hand table). However, I've done a couple of things to my Unisaw to make best use of space in my far-too-small shop.
<IMG SRC="http://www3.telus.net/GLI/Unisawa.jpg">
<BR>
On the outfeed side, I installed a row of old kitchen base cabinets that provide wonderful storage. I use a sheet of 3/4" melamine particle board as a one-piece top so that the large surface also serves as a work/assembly/full-size layout table. Dried glue just pops off, but since it's so cheap, I replace the melamine whenever it gets too grubby or marked. Since the photo was taken, I added a bench vise to the front right hand corner, and no use it more often than the one on my bench. And, when I get around to it, I'm going to make power tool drawers for the space underneath those cabinets.
On the infeed side, the one you're interested in, you'll notice that I have a router permanently mounted in the table so I can also use the Unifence for that. So, what I did with space underneath was to make small box to enclose the router for dust collection and to add a shelf on the right-hand side to hold the pancake compressor for the brad nailer.
<IMG SRC="http://www3.telus.net/GLI/unisawshelfsm.jpg">
<BR>
This setup works well for a small shop.
Cheers, Garrett