Murphi is in the middle of a mega clean-up in the attic, but he can't find Rebecca's lost hat. His magic cleaning machine goes wrong and causes mayhem, which gives him a monster make idea - a paper banana skin! The Mini Monsters create wonderful scrap bag monsters, while Rebecca's grandpa tries to create a new ice cream flavour and a dreamy creamy sundae. The Recycling Express brings an old box with a window, which Murphi and Rebecca transform into a terrific box truck. 

Rebecca and Murphi are dealing with a glut of carrots from the vegetable patch, and they have made everything from carrot cake to carrot juice. This inspires Murphi's first idea – a carton bunny rabbit. The Mini Monsters are making colourful caterpillars, and Rebecca's uncle is snug as a bug in his woolly cardigan when he calls her on the Magic Monster Mirror. The Recycling Express brings an empty box, which Rebecca and Murphi transform into a cardboard kitty cat.