Materials to be used in instilations:
CARDBOARD BOXES: one time used , waste boxes. can be used in installing at various places on which a poster can be attached describing the challenge bried and all required text.
PENS/ PENCILS: Sometime by mistake people forget their pens and pencils in public places which can be collected and put near istilations. Short, unsharpened, thrown pencils can be collected too.
PAPER: Recycled paper, Remainging sheets from used note books or writing pads, or one side used papers can be collected and pilled for writring the ideas
This way people can grab paper and pen from near by instilation and contribute by giving Suggestions, Ideations, Concepting, Writing down their know inspirations, Doodling , Mind mapping etc and finally folding these papers and putting down in Boxes.
This can even lead to discussions among people standing in the Ques.