A mobile wallpaper printer for producing wallpaper, the printer comprising: a vehicle adapted to hold and transport the printer; input means for a consumer to select a wallpaper pattern to be printed on a media web to form the wallpaper; at least one media cartridge containing the media web; a printhead extending at least the width of the media web; drive means to drive the media web past the printhead; and, at least one processor to receive and process the selected wallpaper pattern and to control printing of the selected wallpaper pattern.