I have heard rumors that there actually exist Migros/Coop that are open beyond 21:00. Any idea which, preferably in the center? Checking on their websites I couldn't see any, but I might have missed...
there is a co-op on (actually not sure of the name of the street) but if you are on Ouchy and take the second left after the movenpick hotel and there is a co-op there (albeit a small one) that is open until 22:00hrs weekdays...
Check near airports, train stations, gas stations & heavily touristic areas... Apparently those are the areas where "late night" stores are allowed to be open.
Also look here for a " Coop Pronto " near you. Migros.ch probably the same type of listing.
I'm assuming since the website is only in German and French, that the Coop Pronto is only outside of Ticino. Plus I haven't heard of it, but then again I've become accustomed to getting my shopping done early. What a great idea though! We do have the small stores within the gas stations though.
In BL (+BS?) most Coop Prontos seem to open until 23:00. The Hauptbahnhof in BS has a small shop open upstairs until 24:00. The neighbouring cantons (and non-coop tankenstellen) all seem to prefer closing at 22:00 (or earlier)
Both the Coop Pronto on Loewenstrasse and the one at Schaffhauserplatz are open until 11 p.m. They don't have a wide selection but have come in handy to me many a time .