This the rocker foto contains
teken, poster, tekst, bord, and schoolbord.
There might also be
lessenaar, leestafel, katheder, lezing desk, garage, magazijn, and opslagplaats.
These are from different people from youtube, but it's the same festival. So these are out of order, so just watch them. Also, he only really talks about The Rocker in the first one, but I put all of them up anyway.