Use wooden furniture having 70's design. You may have an idea about those designs on pinterest. Use old style decorative items. You can take big ideas from movies of 70's.

You need a trimphone. you can get good repro ones

Give us some more information.

Okay, let me start off by saying I am obsessed with the '70s. I'm a teenage guy and am moving to a new house, and want a new look to my room. I need help on making my room as 70s as possible, and by that I don't mean summing up the '70s in one room, I want a room that is exactly like a guy who lived in the '70s. For example, I know teenagers didn't have disco balls in their rooms. Some ideas I have already come across:

-Beaded Curtains

-Lava Lamp

-Egg Chair

-Rotary Phone

-Flipping numbers mechanical alarm clock

-Water bed

-Shag carpet

Any other ideas are welcome.