I got tired of fishing things out from behind the desk when they fell through the crack so I found a cheap and simple way to modify the pull out desk in the entertainment center.
I Purchased a piece of brown weather stripping from Home depot for less than $5. I cut it to size and installed it with the curved edge towards the front of the desk drawer (see picture) with the white strip against the top rear edge of the drawer. I affixed it with staples at the rear of the drawer over the white edge. You could use small screws if you don’t have an air stapler or staple gun.
The pictures show what the part looks like, it's part number SKU, and how it looks after it's installed.
The part is a Vinyl-Clad Replacement Weather Strip from MD Building Products; 1 in. x 6 ft. 8 in. Model # 87767. Part URL: http://www.homedepot.com/p/MD-Buildi...7767/100172425