Free Car audio what should i get?

Wow!!!Thanks for the quick responses. I don’t want to do a lot of cutting, dash pulling or look too radical. I’m ok with non stock look. Package tray does have 6x9 areas. I don’t really want to cut door panels if possible. I have two 3 1/2 in the dash. Just looking for AM/FM/CD easy to use...It doesn’t need iPod, phone, DVD screen etc since I don't have them anyway. The usb sounds interesting but, I don't have to have it. Please keep the suggestions coming?