Random Or Deliberate? Styrofoam on Grass

Recently I took this photo of a styrofoam cup on the grass one morning while I was walking our family dog. I wondered if the cup was blown onto the grass by the wind or deliberately thrown there by someone walking on the sidewalk. The color contrast of the white cup and green grass is noticeable. And I love a good color palette but NOT like this. Random thoughts on a Tuesday in fall, is all.