Sunday afternoon with nothing to prove? The Offline Club takes your phone, files it in a "phone hotel," and hands you a jigsaw instead. Three hours on Zoku's co-working floor in the 17th, the city spread out below the windows: an hour of silent puzzling, then an hour of the easy kind of talk that comes when nobody is checking a screen. Bilingual French and English. Standard ticket 9.50 euros, and Zoku asks for one drink per person at the bar.