A trio of creepy-crawly spiders with plump balloon bodies and spindly legs hovers over unsuspecting trick-or-treaters. To begin, inflate two round balloons, one slightly less than the other (the larger will be the abdomen and the smaller will be the head). Tie the balloons together at the ends with thread or monofilament; using a balloon pump, inflate four long, skinny balloons, leaving a 3-inch “tail” at the end of each.
Make one set of legs: Starting a few inches from the neck, twist a balloon, holding it place, and move about 1 inch along the ballon and twist again. Bring the two twists together, and grab the resulting bubble with one hand and twist, which should lock the twists together. Move up another few inches, and repeat to make another knee. Repeat twice more to make four short segments and four knees, with one long section in the center, since air will shit into the tail as you work.
Repeat this process with three more balloons. Then twist one set of legs in the center of the longest segment; hold it in place, and twist a second set in the same place. Place the two sets together, with twisted centers interlocking; the balloons should hold. Finish up by repeating the process with two more sets of legs. Tie these legs to the body, and hang the spider on string or monofilament outside.