Artemis has accessed many possessions for implementing his plots throughout the series. Those include his computers and the cache of Lower Elements Police equipment collected during the events of the first book. One of his most prized possessions given to him by Holly Short at the end of "The Arctic Incident" was a fairy coin that she shot a hole through using the trigger finger he and Julius Root helped her to heal, to remind him "that deep beneath the layers of deviousness...has...a spark of decency". Another gift from Holly Short is a fairy communicator Artemis has disguised as a "rather ostentatious" ring.