Where can you make a bangaroo from Phineas and Ferb?

There's no mention of a "bangaroo" in Phineas and Ferb. It's possible you're thinking of a different word or misremembering the show.

Could you clarify what you mean by "bangaroo"? Maybe you are thinking of:

* A different item or activity from the show: Do you mean something like a "wack-a-doo" or a "doo-hickey"?

* A different show altogether: Are you perhaps thinking of a different cartoon or show?

Let me know, and I can try to help you figure it out!