2001 Prius with no navigation, is there anything I can put in it's place?

I have a 2001 Prius that never came with navigation, I was wondering if there was anything thing I could put in it's place as an addon. My local u-pull-it lot has a 2002 with all of the navigation stuff (that I know of) intact. I'm not sure if it would be worth it to get that factory navigation system or if there were any more simple add-ons I could install that would offer more functionality. If anyone has any experience with this let me know! Thank you.

(Also, this is my first time posting on here. If I didn't anything wrong let me know.)