Freitag bags

Cycle Sign - Trent Jensen

http://www.designboom.com/weblog/cat/8/view/13371/designboom-shop-new-product-cycle-sign-by-trent-jansen.html

The Great Bear

'Adapting the official map of the London Underground, Patterson has replaced the names of stations with philosophers, actors, politicians and other celebrated figures. The title The Great Bear refers to the constellation Ursa Major, a punning reference to Patterson''s own arrangement of ''stars''. Patterson playfully subverts our belief that maps and diagrams provide a reliable source of information. ''I like disrupting something people take as read'', he comments.'
Tate Collection

Reverse Graffiti

http://www.reversegraffiti.co.uk/

Neon signage - Bars

Brooklyn Brewery

Ralph Lauren - 4D

Skywriting

Wiki-

'Skywriting is the process of using a small aircraft, able to expel special smoke during flight, to fly in certain patterns to create writingreadable by someone on the ground. The message can be a frivolous or generally meaningless greeting or phrase, an advertisementaimed at everyone in the vicinity, a general public display of celebration or goodwill, or a personal message such as a marriage proposal or birthday wish.'

Traditional skywriting

Dot matrix skywriting

New Bohemia Signs

Hand painted sign company based in San Francisco.

 http://www.newbohemiasigns.com/about.html