A butterfly cage was made out of fabric material for veils, two 12-inch cardboard disks, two rubber bands, a foot of sting, and the netting was secured to the disks using paper staples all for the cost of about $2. After all the caterpillars had climbed to the top of their cup and had formed chrysalises, the top lid of the cup was removed and taped to the inside top of the butterfly cage using double edged tape