The first paper FingerPhone was created to demonstrate conductive paper at the East Bay Maker Faire.
It was built using the speaker in a large musical greeting card that Hallmark used to make with a bending mode transducer.
The next version used a pizza box as the resonator to demonstrate reuse as the sustainability aspect was emphasized..
Eventually it was placed on cardboard to be attached to poster board where it won "Best Poster" award at the NIME conference.
The conference paper associated with that poster presentation was chosen for inclusion in the NIME reader.