In sets of 8, arrange the pretzel sticks into the spokes of 10 webs, with the centers touching and the outer edges spaced.
Melt the melting wafers according to the package instructions, approximately 2 minutes in a microwave or 3 to 5 minutes over a double boiler. Transfer to a piping bag and cut the tip to create a small hole.
Pipe a small amount of the melted candy onto the center of each web where the pretzels meet; this will hold the webs together. Then pipe a web pattern by starting in the center and spiraling out to the edges. Go around the outer edges a couple times to create a firm border. Carefully spoon over the sprinkles. Repeat with the remaining webs.
Place chocolate spiders in the center, if using. Let set 1 hour.