What age group is this costume for?
Preschool and Younger
Elementary School
Middle School
High School & Beyond

Estimated time required to make this costume:
minimal; some time locating parts

Items you will need: (Hit your return key to start a new line)
Pink blanket sleeper, roomy

Sunglasses

Drum; improvise w/cardboard and paints, or use a real one to drive neighbors bonkers...

Pink socks to match sleeper

Blue flip-flop rubber sandals

Wide blue webbing for neckstrap

Drumsticks

Powderpuff tail/big pompon, purchased or made of yarn

safety pin to attach tail from inside of costume

Instructions:
My son IS an energizer bunny, but won't wear pink. I am looking at the Energizer Bunny beanie that sits on the computer, and his drumsticks are red at the tips, perhaps padded (felt circle, cotton, rubber band to secure). His drum has blue and red detailing, and an Energizer battery logo on the side. Suggest enlarging a copy...or just write "Energizer" in nice lettering on drum.

Other information to consider:
This would be a daylight costume only; the sunglasses are essential to the look, and they hamper visibility too much to be safe at night.

Any costume created for little ones needs to have "potty break" ease and on-and-off ease.
This is especially true for classroom parties, which tend to be hectic enough.