Whilst studying at Goldsmiths in 2011 I did a project where I was looking at how protests usually work and thinking about how to make them more effective.
Instruments, drums, speaker systems. No pop music is allowed though as pop music is usually made in order to be a commodity and be sold which is not in the spirit of a protest. A protest is more about collective unity and expression, not profit.
More material objects
Make the body of protesters less flexible and more difficult to ‘kettle’. The regular bicycle protests that stop the cars on the streets of London are so difficult to control because everyone has a bike and that physically spaces everyone out. Things that create bulk like inflatables, large models of animals, hay-bails etc.
Methods of connecting people together - glue, rope, chains, buttons, velcro. Shields and learning to do the roman tortoise formation.
More information sharing
Easier ways to tell where and when things are happening - signs, encrypted messaging.
Masks and other ways of concealing identity
Covering the face makes it difficult to identify certain individuals who would otherwise be targetted. Also, you might not want your identity to be associated with the cause, although you want to support it.