Very interesting and clever...
I did something in my Elkmont that I'm very happy with. I added an Apple TV unit to my RV TV.
The Apple TV is designed to stream media on to your television, including Netflix, YouTube and Apple's own movie and TV show rental business. None of this is usually very helpful at a campground because there is either no wifi, or its bandwidth is too narrow to support the required streaming rates. However, what is very interesting about Apple TV is that you can also stream movies or shows (and music) from a PC running iTunes with a shared iTunes library.
Assuming that you already have a laptop, the total cost to do this is the $99 for the Apple TV, plus an HDMI cable. What you need:
Apple TV unit
Laptop with wireless and Apple's iTunes installed
TV with HDMI input (most flat screen TV's have this)
HDMI cable
Connectify software (freeware)
It's best to set the system up the first time somewhere where you have a wireless Internet connection. With your laptop on the Internet, boot up the Apple TV, and follow the instructions to connect it to the Internet, and also set up the sharing to your laptop. Verify that the connection is working, and that media streaming works, then disconnect from the wireless network. Once you've done this, run the Connectify software on the laptop, and make your laptop wireless a hotspot, using its wizard. Give the hotspot a name and password. On the Apple TV, log onto the laptop hotspot with the same password; now the Apple TV should be wirelessly connected to the laptop, and with iTunes running on the laptop, any music, shows or movies on your laptop can be streamed over to the Apple TV.
Here's a few installation shots:
The Apple TV mounted to the wall with adhesive velcro strips. Apple TV is very small; less than 5" X 5" X 1". You can see the power and HDMI cables coming from the top:
The entire system on the RV wall. The cabling takes up more space than the Apple TV:
The TV streaming one of my wife's favorite movies (Steel Magnolias). I went outside to relax!
Since the Apple TV is a "passive" wireless device, you need something to act as a hotspot and control communications. I originally planned to use a wireless router as my hotspot, but that adds cost. When I learned about Connectify, that gave me the hotspot I needed, and since I always have my laptop with me when camping, that problem was solved. Then, realizing that the laptop stores more media than I could ever put on my iPad, I decided to use that and iTunes as my data stream source.
Of course, you need to have watchable TV's and movies in Apple format for this to work, which I have as an avid iPad user. One way to get these is to convert the DVD's you have via a conversion program that converts DVD's to .MP4 format. I use one from Aiseesoft that cost $29.