Unfortunately, that floor vent is just barely wide enough for the 3 taps, so I get some spillage anyway. Underneath that is a stainless drywall mud pan with a bulkhead fitting and a length of tubing to keep beer away from your shoes when you pour.
The tap handles were pretty easy, too. Cut down hardwood candlesticks, little wooden barrels, and wooden medallions. In fact, this whole project was done with off-the-shelf components from HD and the craft store except for the cold plate, faucets, shanks, and actual draft fittings.
There was a better picture of a couple of the tap handles in the label thread, but it might be gone now. Here's one that shows the components and assembly:
The medallions screw on and off of the handle itself because they're 100x easier and cheaper to make than the handles. I'm working on building up a stock of about 25 of the medallions for various common styles I brew. Honestly, the graphic design takes longer than putting them together.