Step into Ali Haydar Caglar’s shop NEUKÖLLNER:INNEN — better known as Haydo — in Berlin’s Neukölln district, and you’re diving headfirst into a world of color: blazing orange Reese’s Puffs, fire-red Froot Loops, rich Cocoa Pebbles, and sky-blue Oreo O’s. Everywhere you look — shelves, checkout counter, even the ceiling — it’s stacked wall-to-wall with cereal boxes.

Haydo, who grew up in the ‘90s obsessed with Kellogg’s and all things breakfast, now curates the ultimate global cereal collection, with a heavy dose of American classics. His store isn’t just a hit with neighborhood kids and tourists — it’s also become a magnet for a pretty unexpected crowd: rappers.