Pitch shifter

[Valoosj]

Are there any good diy stompboxes that can achieve the following?
This is a vid of the mario tune, played clean with a pitch shifter. It sounds super cool!
http://www.youtube.com/watch?v=Cp192EaeWAM

And then I saw this vid
http://www.youtube.com/watch?v=MeU6RbfC-S8  pitch shift at 1:56

I would like to be able to get both pitch shifting sounds. As I am not familiar with the effect, can somebody guide me to what I want?

Thanks!