If you want to be certain what type of worm it is (and this can help you know how to treat the worms), wipe the worm off your cat's behind with a piece of tissue, and put it into a Ziploc bag with a small piece of damp paper towel.
On the night before the party, place each item into a Ziploc bag, fill half of the bag with water and then stack them in a freezer so that the lingerie is frozen inside a layer of water.
While you can put your child's lunch items into Ziploc baggies, you can cut down on costs by purchasing some small Tupperware or Gladware containers.
Most dogs are ready to have a bowel movement first thin in the morning, so you'll want to have a clean Ziploc bag ready and label it with a marker.
Ziploc bags: These easy-close plastic bags come in a number of sizes, including a "big bag" size perfect for holding 12x12 paper.