Walking around Kreuzberg a few months ago, I spotted my first “illegal street knitting”. Masquerade, the playful rouge knitters behind the guerrilla action, document their stitched streets bombs on their site and share their thoughts about the craftism movement. You might also catch their work on commuter trains. Apparently, the Masquerade crew likes to embroider messages like “kram” (Swedish for “hug”) into the fabric of the seats.

Check out the tourist map to see if there’s any unruly sewing your neighborhood. Better yet, grab some needles and spread your own yarn!