He put up a poster asking for help with my name as the contact.
I'd like to remind you of a poster produced by the Campaign Against the Arms Trade, which I found particularly poignant.
They were looking for the propaganda poster that said "Careless talk costs lives."
In addition to the standard searches used by competitors in finding a particular film poster, this one also has a pull-down menu that allows you to access material by era (i.e., pre 1940's) as well as by the price range you'd like to pay.
Purchase some brightly colored poster board, stencil letters and paint, embellishments such as glitter, buttons and stickers, and anything else that will allow each and every family member to make their own imprint on the final product.