Whats the least amount of money u can spend and still put together a decent system?

Just lookin for ideas here...I guess this requires a lil work but if u like audio I guess it'd be kinda fun.

Just lookin for people to come up with the best system possible spending the least amount of money.


IonNinja 2005 Saturn ION-2 Sedan 1996 Ford Contour GL - Collecting dust...Zetec project anyone?