Boards
Do you ever imagine that you're walking with someone from 100 years ago?
and yer all liek "That's a cashpoint...everyone has a little card and a secret number and you can get cash when you like".
"those are planes...yes they were on their way in during your time but they've come a long way huh?"
"Mobile phones...yes don't be afraid - it's just like a telephone but without...etcetc"