Deconstruct a cardboard box, flattening it out and laying the cardboard down outside in the grass or another working area. The larger area you cover with cardboard the more success you will have keeping the mess contained while spray painting.

Wearing gloves, place the foam balls on the cardboard. Shake the spray paint vigorously and then spray the foam balls until they are fully covered, turning as needed. Once a foam ball is fully painted move it to the side or transfer it to a separate paper plate. Avoid leaving it directly in a puddle of spray paint because it will stick to the cardboard while drying. Once all the balls have been painted allow them to dry, for about 20 minutes. Move the balls around slightly at least once during the drying process to ensure they do not stick to the surface of the cardboard.

While the spray paint is drying, cut the pipe cleaners in half. For 1 spider, make a plus sign with 2 half pipe cleaners twisting at the center where the pipe cleaners overlap. Repeat with 2 more half pipe cleaners, twisting them around the center where the original pipe cleaners meet, making 8 legs.

At the bottom of each leg make a small bend (to be the foot), and a bend in the middle of each leg (for the knee).

Glue the center point where the legs meet to the lid of the treat jar with hot glue.

Glue one smaller and one larger painted foam ball together with a small dot of hot glue creating the spider body.

Attach the body to the top of the legs using hot glue. Place a dot of glue on the larger part of the spider body and the smaller part so that there are two points of contact with the container lid, making it more secure.

Glue two eyes to the smaller foam ball.

Fill the containers with small candies and close the lid.

Pass them out to trick or treaters or bring them to a classroom Halloween party!