MIAMI — When he was growing up in 1980s Brooklyn, graffiti artist Alan Ket got good at improvisation. “By the time I grew up, all the spray cans were locked behind cages,” he remembers. “I used to use Ban Roll-On and take off the top, then I’d steal erasers from the classroom and pull out the felt, then use the felt tip on the Ban Roll-On. I’d go to the supermarket and get purple supermarket ink and fill it.” That eye for detail paid off. Along with co-founder Allison Freidin, Ket is overseeing the opening of the Museum of Graffiti in its new home next to Wynwood Walls. It’s a fitting locatio…
