Hey riumplus have you worked with sound chips. I have a metal blaster prop (see above) that has limited room but have seen others put sound to it
SupaNova BRISBANE 2013 November 8-10 RNA Showgrounds
BUT
This coming weekend is May the 4th Be With You! @ DreamWorld on the Gold Coast
It will be the biggest gathering of Star Wars characters, creatures and droids in Australasia so if you nearby come on down!