Some very good replies that bring back fond memories, but a few comments though:

Watch faces - while yes they exist I am alarmed by the fact that many can't actually read them. Same thing with dictionaries/phonebooks/postal code books; the art of looking things up alphabetically seems lost on many today. To those that have only known how to plug in a word or query into their phone many seem to not know where to even start when provided with these things.

Particularly disturbing to me is the fact that most 5 year olds know how to use smart phones and tablets (I saw a three year old taking selfies the other day) yet can't perform basic tasks like tying their shoes.

Let us see, other things that seem to be lost today:

answering a phone without the benefit of call display (however did I survive without it?)
removing hats while indoors
lining up and waiting one's turn
cars without driving assist functions
no seatbelts!