#1.)  Handwriting.  And people specifically mentioned that handwritten thank-you notes are quickly disappearing.

#2.)  Using a dictionary or encyclopedia.  Now we just Google words to find out what they mean . . . or research things on Wikipedia.

#3.)  Mental math.

#4.)  Reading a map.  The GPS and mapping apps have made maps obsolete.

#5.)  Finding something at the library.  No one remembers how to find a book using the catalog and the Dewey Decimal System anymore.

#6.)  Playing board games.  Every board game has an iPad version now.

#7.)  Sending a postcard.  We publish our own vacation photos on Facebook instantly now, so there's no real need to send a postcard.