Freeway bannering is a powerful tool for activists. It’s inexpensive, most of the required material is reusable, and it’s an effective way to reach thousands, even tens of thousands, of people in a short period of time.
This method of building a pipeline is extremely inexpensive and pretty quick. It folds up very easy for transportation and is extremely light for people to carry. Just make sure people carrying it hold it far enough apart with a little tension between the pieces so it looks like a pipeline.