pongpong / pongpong

PongPong is a toy designed for children which is set in public place. A special
feature is that it can store up electric energy when children use it to play. Plug
PongPong in the pedstal when children don't play it and it’ll provide lighting
for the public. Communities are paradise for children to play, so, let the children
do a little bit of contribution to collecting more enegry when they're playing.