In the movie IT, Pennywise the clown, with his red balloon, plays a menacing role that terrifies viewers even in the trailer.
They used this red balloon to market the movie on the streets with a shoestring budget:
$10 for 100 balloons
$20 for white spray for reverse graffiti
$10 for letter stencils
With just $40, you could repeat this street marketing campaign 100 times.
Even with a big advertising budget, you must draw inspiration from your own work to create and run marketing ideas through low-cost campaigns.