If the engaged couple adores art and all things design, this is the ideal theme for the bridal shower (or Jack and Jill). Guests bring a white t-shirt and their creativity. Provide different stations throughout the party area, each with a large canvas and assorted types of paint (e.g. acrylic, water based, oil based).
The task for the guests: to collectively create works of art which will later be displayed in the newlywed’s home (or maybe even at their wedding reception!). Purchase additional acrylic paint and fabric medium for guests to decorate their white shirts as souvenirs!