The objects are setting up for Christmas or something

Radio is playing music

Leaf, Flashlight, Phone, and Gear are putting up lights

Gel Ball, Soap Bottle, Cookie, Girly Ball, and Blueberry are hanging holly and mistletoe

Stop Sign, Orange Marshmallow, and Taoism (aka Ying and Yang) are finding ornaments

Microphone and Flat screen is setting up the Christmas tree

And rest, Feather, Puffball, Baseball, Dynamite, the 2 Cherries (Stella and Kordita) and Sponge are playing in the snow

You go find something to do with the cast :)