I'm behind the curve on this. What happened to Penny Ante?

Did it get rained on before Bob Boden could move it to his house?

From the Golden-Road FAQ:

Penny Ante was retired because of a series of mechanical problems that flared up throughout the 1990s and became considerably more frequent during Season 30. It was actually scheduled to be played in Season 31 on October 9, 2002, but it malfunctioned before the taping, was replaced by Pick-a-Number, and was subsequently removed from the pricing game rotation. The staff decided to retire it, but they reversed that decision later in the week; unfortunately, by that time, the game’s board had been placed outside by the garbage, where it was damaged beyond repair in a rainstorm. The show had long intended to rebuild the game, and although the process of doing so never really got off the ground, it was not officially declared as being retired until nearly five years after its last playing.

I'm not sure where exactly the warehouse is, but it's "about a mile away" from what I was told. The offices are next to a Home Depot in Glendale, and occasionally you can see some Price props around their office from the sidewalk of Colorado Blvd. I don't think their warehouse and their offices are in the same building though.

They just leave some of the games out in the open behind the studio on tape days because there's not space in the building for them. I do not know what their plan is in the event of rain, but given what happened to Penny Ante, I'd hope there's some sort of plan. Allegedly they were constructing a warehouse on the lot, and they've made a lot of progress on the building next to the studio over the past year, but it still isn't entirely finished yet as of my last trip out. I'm going out again in December though so that may have changed.

Does Real Time with Bill Maher still tape there?

They recently switched studios to 56, I believe. I might be wrong about which one they're in now, but it's not 33.

I've never seen the mural on studio 46.

I had dealings with CBS and TV City back in the '80s. To say they were not nice people would be the understatement of all time.

What's going on in 33 now? Studio 33 had been designated as "the game-show studio" back then.

Do you suppose they're still storing prizes in the warehouses at Beverly & Fairfax?

Nope -- I was at Television City this summer, and all of the prizes were gone. One former prize warehouse was storing audience risers. The external pricing game storage area now holds Dancing with the Stars set pieces; the main pricing game area is now just miscellaneous storage. I don't know where they're storing everything, or how far away it is, but it isn't at Television City.

TPIR hasn't been completely wiped clean from the facility (the green screen used for souvenir photos is still over by the benches), but for the most part, it's gone. However, all of the Barker commemorative displays -- the Bob Barker Studio plaque, the Bob Barker Promenade plaque, and the mural painted on the exterior of Studio 46 -- are still up.

Here's a short, slide-show, with closer up pics of portions of the set:

https://www.reddit.com/r/Jeopardy/comments/1gs4anh/its_in_the_details_heres_a_sneak_peek_at_the/#lightbox