A couple of years ago I purchased lights for an RC car. These had plastic lenses, etc. and came both round and square.

I epoxied them in place onto landing gear, making for some very nice looking landing lights...

Something similiar to this:

[link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYCT9&P=ML]Car Lights[/link]

And this: [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXDZ55&P=7]Click me Too![/link]