DIY: Bubble recipe and refill station. Love the idea of reusing plastic cups from restaurants as the containers. Keep the bubble solution confined to one big refill container, and no worries about leaky, yucky containers hiding all over the house!
Mermaid tails for party favors: Beach towels with Velcro tabs on one end to secure around the waist. For flukes, wrap two ponytail holders around the bottom. The mermaid tails can be easily disassembled to use as towels or to be washed.