nine 4′ bamboo garden stakes (sturdy, unsplintered, straight stakes of uniform thickness)

six 10″×13″ Tyvek mailing envelopes

a spool of kite string

clear packing tape

cotton string slightly heavier than kite string

(optional) 5′ of plastic caution tape

(optional) a 1/2″ diameter split ring

(optional) a fishing swivel