Summer means picnic time. And though any grab-and-go might do, we've found some pretty neat places to put your picnic together - if it's not done for you already. With all of Boston's green spaces - Rose Kennedy Greenway, Boston Public Garden, Boston Common (perfect for Shakespeare on the Common's The Two Gentlemen of Verona, playing on the Common July 6-28) - places to lay your blanket about. Did we miss your favorite provisions post? Let us know.