A Frog Ring is an item in Chibi-Robo. There are ten frog rings scattered around the Sandersons' house. For each frog ring returned to Jenny she will give Chibi-Robo 33 happy points each. Once all ten frog rings are returned to Jenny The curse set on her by the frog wizard will be removed and she'll remove her frog hat and talk normally, but as soon as Chibi-Robo leaves the room the curse will resume and Jenny will speak in ribbits again; lastly the frog rings change positions.

How to find the first set