We have designed two different types of street devices to fit two different kinds of action.
White Paint. Active device (counter-violence, self-defence): White paint. Meet up with some friends and several brushes and make the walls shut up for a while.
Recyclable paper bag. Passive device (protection). Put a nice recycled (and recyclable) paper bag on your head and make sure you get someone to walk with you.
HOME DEVICES: FriFriTiVi
Technophobic. Take a big board and paint it white. Hang it on the wall and enjoy a quite Sunday of Frifritivi.