It's a special day in the attic, but Rebecca seems to have forgotten all about it. Murphi has an inspirational idea for a 'bee-autiful' yogurt pot bee, the Mini Monsters transform paper plates into snappy-mouthed animals, and Rebecca gets a call from her uncle at the zoo. Finally, the Recycling Express inspires Murphi to help Rebecca turn different-sized cardboard boxes into a cake. 

Murphi thinks he has seen an alien in the attic, but it's only Rebecca pretending to be an underwater ocean explorer. Water inspires the first monster make of the day – a sea turtle bowl. The Mini Monsters are inspired by water too, transforming different-shaped boxes into boats. Rebecca's cousin is by the sea, turning discarded rubbish from the beach into a fantastic seascape. Finally, Rebecca and Murphi create a manta ray from an old plastic bottle, with the Tiny Helpers lending a hand.