Pull up a bench or find a spot on the sand, kick back chillax and do some cloud watching to pass time and unwind.
I have never quite grown out of the 'clouds that look like things' game!
You can find a nice quiet spot on the busier summer nights further down the beach heading away from the pier towards Apex Park.
Grab a pizza from Pier 71 - amazing italian food or some fish and chips from Altona Ice on the esplanade (they also sell ice cream!) and marvel at mother nature with a good bite to eat.
Or take a book with you and cloud watch in between flicking your pages.