1) Dymentia – The “Main kahan hoon..” fever was a rage in 70s-80s films. Whenever a character woke up after an accident, the oft-quoted statement used to be Main kahan hoon…
3) Logo-based titles
Each film had a unique picture,logo associated with the name. e.g. Parinda had a picture of a flying bird, Aashiqui has a very popular leading pair behind the suit, etc
4) Hand painted hoardings of the films
5) The butterfly sitting on the flower or 2 flowers touching each other [self – explanatory 😉 ]
6) Maruti 800
I can still remember some films [e.g. Ghar Ghar ki Kahani] showed Maruti 800 being used by the artists.
7) The rotatory dial phone
9) Bell bottoms
10) Giant hair style of the leading actresses. I dont know what is it called, but that is a rare thing these days. Asha Parekh & Nanda used to have that style.