We saw this over at AT:SF and had to slink it. In order to toddler-proof their media components, the parents had a plexiglas wraparound custom made.
It's clean and simple, ventilated in the back, remote control-friendly, minimally disruptive visually (if at all), and inexpensive (about $100). Nursery Readers - do you have something that rivals this you'd like to share? Email us at nursery(at)apartmenttherapy(dot)com.