after the group spoke with adam and james there were some fears that people would put anything down the chutes and ruin the piece, so after looking at different money collection boxes and ballet boxes, all seem to have one similar feature, a money slot! so we are thinking about harnessing this idea on the chutes so that it is only big enough to fit a puzzle piece measuring 15cm square, so no one can chuck, rubbish, food, etc. down the chutes