Classmates Saga Laventzakis and Leia Sandell unveiled their design live at Vasa Real in Stockholm, where students and TV viewers could see a giant version of the blue and pink flower.
"We thought of some happy colors," Saga Laventzakis said to TV4.
Proceeds from sales of the Mayflower go to children living in financial hardship. Last year, 30,000 children were able to receive help from the funds raised.
"These can be expensive purchases, like a winter jacket and a pair of winter shoes," says Åse Henell, secretary general of the National Majblommans Association.
One in eight children grows up in poverty in Sweden, according to the organization's figures.
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