I like the idea of using a polka dot backdrop like this for pictures.
Possible Tableware for Painting Party Theme Polka Dot Party Standard Kit
pretzels white candy with purple sprinkles
Sweet Shoppe Lollipop Party Printable Labels for by tomkatstudio
Polka Dot Cutout Cake Your guests will be asking "How did you get the colorful polka dots in the cake? The secret is to place baked multi-colored cake circle cut-outs in a white cake batter then bake the white cake layers.a very good idea!