Earth's Timeline Cards
This is a good activity to use with rolls of toilet paper (400 squares) and a very large space like a school hall or corridor. Alternatively, you could use a 5 meter long tape, or 5m of anything (tinsel?). For this option, mark out every 1 meters as 1 billion years.
There are countless more events that have happened in the history of Earth. To extend this activity, you could make more cards and add them to the timeline.