Zelda64

You can steal the fisherman's hat.
When you are a adult get as close to him as you can (with the rod) and cast on him. Eventually you will get his hat.
Then you can give it back to him, or keep casting in the water till it cuts loose and you will be charged 50 rupees
(but he will have lost his hat forever).

To get this game:
http://www.gamecave.com/default.asp?source=uddm&sku=021N64ZELDA
(Information from Cheat Machine)