New musical instruments

We were driving in the car today, and Riley was playing music on a toy
pan from their kitchen, and Sam wanted to play too. She didn't have an
"instrument" so she started doing thinks with her hans and feet
accompanied by the appropriate musical sound from her mouth. She says
she was playing the Skode and Ruffus, two instruments she just
invented. I'm not quite sure what they are, but judging from the
gestures and sounds I'm guessing they are members of the percussion
family.