My daughter wears gles. How can I work around that for "Cool Shades Day" at school?

As part of a week-long academic "pep rally", the school's PTA has designated Tuesday as "Cool Shades Day" . All the kids can wear cool and creative sungles to school. MY daughter wears gles and skipping them for a day is NOT an option. How can I help her participate in Cool Shades Day?