Melt chocolate chips in top of double boiler. Let stand over the water until water is cool, about 10 minutes. Place wax paper on cookie sheet. Pour chocolate into a pastry bag that is fitted with a 1/8-inch or 1/4-inch tip. Squeeze chocolate onto wax paper in the shape of spiders. If chocolate is runny it needs to be cooled longer. Chill the spiders for about 10 minutes. When hard peel off wax paper. Store in refrigerator laid flat