Lock manufacturers and Key makers. Fences buy stolen goods from Cat Burglars. Possible lowered insurance rates for items that are marked or tagged. Internet tagging or marking registration is the future. Stolen paintings are by masters and owners are untraced.
Hardware shops sell baggage.
Property is lost in large cities. Items lost on trains, boats and planes are in Lost Property Offices of Train, Ship, Boat and Aeroplane Owners. Corporate promotional goods are successful. Lost items anywhere in the world will be returned to their rightful owners household property register even if lost on an airline or aeroplane. Promotional Keyrings are popular corporate gifts.