Pause game during play and go to Extras.

Effect	Password
Character Studs	qd2c31
Dark Side	x1v4n2
Dual Wield	c4es4r
Fast Build	gchp7s
Geonosian Starfighter unlocked	EDENEC
Glow in the Dark	4gt3vq
Invincibility	j46p7a
Minikit Detector	csd5na
Perfect Deflect	3F5L56
Regenerate Hearts	2d7jns
Score X10	n1ckr1
Score X2	yzphuv
Score X4	43t5e5
Score X6	sebhgr
Score X8	byfsaq
Stud Magnet	6mz5ch
Super Saber Cut	bs828k
Super Speeders	b1d3w3