I stopped into the local Electronics Boutique and noticed the Intec XBOX 360 Wireless A/V Selector & Storage for $9.99. I'm not sure if this thing is still in production, but it usually retails for around $40.00. I've read both positive and negative reviews. For ten bucks, it's got similar features to higher priced switch boxes (i.e. component).
Here's what it looks like:
http://www.amazon.com/Xbox-360-AV-Selector-Storage/dp/B000BDGAO6
Here's what it looks like:
http://www.amazon.com/Xbox-360-AV-Selector-Storage/dp/B000BDGAO6