More advanced excercises?

Heres a question for you guys, do you know of more advanced bass exercises that will get a player thinking as well as playing?

What I mean is something other than the regular old major scale. I find myself (while improvising or coming up with bass lines) playing patterns and certain intervals over and over. Obviously, something like the blues scale will never change, but I feel that sometimes my rhythms and note choices (even in different keys) lack some originality and creativity.

My style is very RHCP influenced if it helps...

I'm not saying I'd be against playing scales to practice and get the fingers working, but I'm looking for some new scales perhaps, or different intervals...you know what I mean

Any help is appreciated! Been playing for just over 3 years btw.

http://www.amazon.com/Gig-Book-Bass-Scales-Books/dp/082561595X

I have this book, loads and loads of scales in there. 180 I think, it even has the main scale type then different versions were the first note isn't the root.