I have a Pinterest account. One of the ideas I found there was a photo of a clay urn tipped on its side, spilling blue lobelia onto the lawn like water. I love that picture!
Now, I don't happen to have a clay urn. I DO have two old square washtubs. Last year they held herbs and flowers. This year I planted potatoes in one. They drowned, so I retired the tub. However, the other tub was available. I tipped it on the side, propped it up with bricks, and filled it with blue lobelia. Now, this is spilling wash water, right? Hm... A trip to the store and a six-pack of white alyssum later. Viola! Now there are random soapsuds floating in my spilled water.
I can't wait for the flowers to spread. I want to see the tub filled before half the dirt washes away.