How do I fit all this stuff in the MINI

Since we are meeting some of the gang at Walmart in the wee hours of the morning, I started to pack Woodstock tonight. This is going to be tough, I've got all the inventory, cutter/plotter, two computers, luggage, 2 chairs, roll up table, display signs, table cloths, first aid kit plus all the snacks, drinks etcx.. I'm just wondering how I'm going to get it all in the car without having to put the roof rack on.... This is going to take some creative packing...