Here's a link to a photo album that has some cage pics. However, I'm no longer using that cage. It was a glass display case that had been modified. I removed the glass top and cut it into panels and made screen panels as well so I could closely crontrol the amount of air flow through the cage. THe wood that you see in there is a root ball from an oak tree.
The skinks are now in a larger (approx. 4.5 ft. tall x 3 ft. x 1 ft.) wire ferret cage. I used plastic fencing and zip ties around the whole thing, because they could just squeeze out between the bars otherwise. The new cage is roomier, but it means that the entire room the skinks are in has to be kept very warm and humid, which is not easy or cheap. But I'm moving in December and building custom cages, so I'm willing to put up with the wire cages for now.
There are a couple folks around here who have built pretty nice custom cages for their PTS, perhaps if we're lucky they'll check in.
Link