Best type of blanket for park/picnic?

Has anyone found a type of blanket they love to use while at the park? We tend to grab whatever one we have available, though it either collects all the grass clippings or if the ground is slightly damp, the blanket also feels damp. It would be nice to get a blanket that works well and cleans up easily.

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    07/18/14
    Bre
    I use a fitted bed sheet and use my shoes to keep the sides up. It works well and keeps the dirt or sand from blowing on the blanket because the sides are up blocking it.
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    About Jen
    Current: Minneapolis, Minnesota
    Birth: January 30
    On Moms.com since: Feb 10, 2014
    I work outside of the home full time and so does my husband. I cherish all the time I get to spend with my daughter.