Okay guys, I need some help. I need to make a cake similar to this but I'm at a loss as to how to attach the smaller "paint can" to the board. I will obviously have to ice and cover it with fondant before placing it on the board and I know I can probably attach and ice the large cake like normal but how do you place another cake that will already be own its own board. Tape? Hot glue? will icing hold? Please help!!!! Thanks :)

You could use melted chocolate to attach it to the board. If it is being delivered, I would wait until it got to the location, and just set it on the board.