Use what you have, keep it safe so kids can move around and not trip. Search for what you have and create something from nothing. Search your toy box, kitchen and closets for ideas to get you going.
Garbage Bag Costumes - Cut head and arm holes in bag
Bag of Chips - use chip clips and tape front of real chip bag on front and back of garbage bag)
Bag of Money or Money Tree - Use play money from dollar store and tape all over bag or just coming out the top. Add a hat/touque with money glued all over it.
Black Garbage Bag - Add yellow crepe paper stripes and headband with antennas out of pipe cleaners.
Swamp thing - Glue leaves all over the garbage bag and a hat
Orange Garbage Bag - Be a pumpkin
Clear Garbage Bag - Fill with balloons and be a bag of jelly beans.
Spa Girl - Bathrobe, Slippers, Facial mask, hair wrap
Hockey/Baseball player - Use your own equipment
Butterfly - Use own leotard and tights - make wings to wear
Construction Worker - construction hat, tools, boots, etc
Cat or Dog - Use leotard and tights - attach ears to a headband and make a tail.
Cowboy - hat, boots, chaps, toy guns
Ghost or Mummy - White sheet,
Hippie - Tye dye shirt, long hair wig, love beads etc
Punk Rocker - wild colored hair, black cloths and chains
Princess - crown, wand, frilly dress or cape
Glow girl or guy - purchase novelty flashers and glowsticks and wear them all over you.
Greaser - Leather Jacket, tight jeans, white t shirt and gelled hair