Chicago gangs of the '70s and '80s carried calling cards. There were no numbers or addresses, just a crude logo and a list of crewmembers with names like Nacho, Sun Down, Bubbles, Sir Lazy, and Lil Bear. The blog We Are Supervision features a rich selection. Here's a sampling:

Source:  We Are Supervision  

(Thanks, Coudal)

By blacking out large sections in newspapers, Austin-based writer and cartoonist Austin Kleon creates poetry. Some of the poems are funny, some are melodramatic, but the site's worth a look.

(Thanks, Kottke.org.)