The D.I.Y. spirit has always been a driving force behind graffiti aesthetics. If a writer wants to reach a tricky spot, he or she will find a way. Such independent determination often leads to unexpected innovations. To paint on a larger scale, writers modified fire extinguishers to spray paint. For smaller tags, the perfect mop was developed by popular graffiti supplier Krink.

Not only have the tools of the trade evolved in the last 15 years, but also the ways in which viewers experience work have shifted dramatically. Artists like KATSU have led the pack in re-thinking how we approach graffiti and street art. See who else has contributed to The Best Innovations in Street Art of the Last 15 Years.

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