Inspiration struck when I saw a DIY project on Lifehacker a while back where someone used some black plastic pipe to create a cheap riser for their monitor. Being someone who appreciates the finer details, and not being able to find black (only white PVC), I turned what might have been a 10 minute hack into about two hours, but I love the results.
Helping the success of the project, I have an older computer desk of the same "wood grain" and color which now only stores our printer, the UPS, and a lot of old game CD Jewel cases. The keyboard pull out drawer was no longer in service at all, except to hold a couple odd bits of junk, so I pulled it to become a new monitor stand.
You can see in the picture above that the Mac Mini is now back in the realm of the living and my laptop is tucked back under the shelf with plenty of room for air to circulate around it. The only challenging bit now is getting media in and out! It does slide out easily and I left myself some room on the right to get SD cards in and out to transfer pics from my camera to my laptop.
After removing the slide rails from the keyboard tray, no further assembly required. Simple, elegant, and most importantly, cheap and quick.