There was a company, I think Blue Circle Audio or something like that, from Canada, who used to put products in short lengths of black ABS pipe and just fill up the ends with silicone from a tube. For variety, they'd put an amp in a purse, or amps in a pair of womens' pumps. Wonder if they're still around?
I spoke to Gilbert from Blue Circle at AXPONA 2 weeks ago. Bought one of his PLC things which amazingly good.