Buying Cow Bells
Souvenir cow bells can be bought at Teddy's Souvenir Shop.
For used authentic cow bells it has been suggested on the expat's in Zürich list that one check out the Brokenhaus (second hand store) at the top of the Brunigpass between Lucerne and Interlaken. It is right by the Brunig train station and is open on Sundays.
For new functional cow bells it has been suggested on the list that one go to a Landi store.