Need something to set your object into the correct light ?
Print yourself a small Spotlight..
This Par64 Spotlight is ~8cm high and 4cm wide.
You can see more pictures at: http://ifeelbeta.de/index.php/other-objects/par64-spotlight
Print both stl files, insert a led and enjoy.
Waring if you use the openscad file. This will generate objects with thing below 0, so move the exported object up if you dont want to destroy your printer.