This small IR Toy case by GHPS is up on Thingiverse:
Sick of beige cases? Then print it in blue, red, black – or the color that you want…
The irToy by dangerousprototypes is a small, universal infrared controller for the USB bus. It can receive and send arbitrary ir signals – and is completely open source.
But comes quite naked without any case.
This enclosure is as small as can be allowing it be attached to the screen or desktop case. The front provides posts for an ir foil to shut the box close and still receive/send ir signals.
More cool DIY cases here.
You can get IR Toy v2 for $22.05, including world wide shipping.