Lottery collecting enthusiasts who study and collect lottery tickets from around the world.

Photographs sent in by visitors of various manhole covers from all over the world, as well as history and links.

A collectors guide to vintage handcuffs, featuring a gallery of handcuffs and related restraints as well as feature articles on handcuff collecting, Houdini and his fellow escape artists of the past.

Photographs and information about collecting, and researching them as a hobby.

A personal collection of Handcuffs, Leg Irons, and other institutional and historical restraint devices. Includes resource links page, patent papers, function animations, and books.

History of flashlights and images of flashlights with information.

Business card collecting facts, fun, and information. Links to business card collectors and traders around the world.

Information on air raid sirens and other siren and warning devices. Features photos, sounds, projects, restoration, forum, and links.

A collection which includes a complete alphabetical listing, images and a trade list. Site in German and English.

Contains detailed research on Old Spice for Men products: mugs, and bottles. Also reports on eBay sales of Old Spice items.