Using 4 different colors of painters tape(in case I need to take it down the wall will be okay) and I sectioned off the different time periods. I got the idea from Homeschool in the Woods . Purple-Ancient, Darker Blue-Medieval, Green-Renaissance, Blue-Modern. I used return address labels to put up the dates - I just wrote on them with sharpie and stuck them to the tape.
I found another use for paint chips and glued the timeline pieces we used this year(i just took them off our old timeline) to the paint chips to make them a little sturdier and you know how I love me some color!!! I then used sticky tack to put up the pieces. I thought about laminating the pieces but decided not to - too much work!