Gummibandbild (rubber-band picture) by Dieter Roth, 1961, pigment, nails and rubber bands on plywood. Photo: Adda Ragnarsdóttir and Karl Roth playing with a Gummibandbild.

From Roth Time: A Dieter Roth Retrospective, MOMA & Lars Müller, 2003

see D.R. also here.