Two Los Angeles designers want you to bomb the forgotten spaces of your city. The duo repurposes gumball machines into street-side “seed bomb” dispensers, now popping up in cities across the country. The “bombs” are a mixture of clay, compost and seeds that users throw anonymously into parking medians or sidewalk cracks, temporarily infusing a bit of green into an otherwise gray urban site. Read more about the “GreenAid” seed bomb project here.