I saw an article on SwissInfo about the Museum of Applied Arts and Design (Gewerbemuseum) in Winterthur.

Do you have any items that you consider design icons that others may not?

Can you suggest products that should be ritually destroyed for their bad taste?

Yes. Teasmades and hostess trolleys

Good choice. They both seemed to die out after their popularity in the 70s.
There still seem to be a few people determined to keep them alive though

I have a love-hate relationship with lava lamps.