If it is a game console, I sometimes think of it as a male since the Xbox 360, PS3, and PS2 fat looks more masculine. But, I tend to think of the Wii, PS2 Slim, DS Lite, Wii, and Gameboy Advance as female since they look more feminine.
It is the same for other electronics like Desktop PCs I usually associate as male unless they are pink.
Mostly everything I get is male, though when I get an electric guitar I'm pretty sure so far it'll be a girl. Carmen I'm thinking so far, maybe Tatiana.