Heuer Monaco – 1st Automatic Chronograph and also the 1st square cased water-resistant chronograph – from 1969!
Bialetti Moka – So worth reading the Wikipedia entry here.
There’s even one on display in the London Design Museum.
I tried it for the first time this morning and, sure enough, it makes great coffee!
Apple iPhone – What can I say? I use mine as a phone, camera, web browser, music player, calculator, currency convertor, language translator, step counter and now even a guitar tuner!