You can get this kit at http://www.gadgetgangster.com/77 and build your own!
This gadget tests consumer electronic hand held remote controls such as those used by TVs, VCRs, DVD players and other equipment. This is very simple to assemble and use, and it will make a great beginner's first project. To use, simply point the remote at the tester and push the remote's button(s). The tester flashes a LED every time a signal is detected.