Changes to Australian import laws a couple of years ago means that we can no longer import laser pointers - however this ban does not extend to laser diodes or modules. I purchased a 405nm laser module off ebay recently and decided that I needed a housing for it. 405nm was advertised as Blue/Violet - it's a nice colour, but more towards the UV end of the spectrum.
A visit to Jaycar on the weekend set me up with a AAA battery holder and a push-button and an afternoon on the lathe with some Aluminium turned out this:
Click to Embiggen
I'm happy with the result and it looks a little like a light-saber!