Stirring paint is about as entertaining as watching it dry.
Today’s invention is a deep tray, placed in the boot of the car, which accommodates a small number of paintcans, lying on their sides.
The tray allows the cans to roll about, as the vehicle turns, and mix their contents during the journey back from the DIY superstore (assuming they aren’t already solidified due to poor stock control).
The tray also catches any spillage, in the unlikely event that a top comes off in transit.