For a reference you can click on the Related Web Page link (below the cache title) to view the Glossary of Terms used as part of the Geocaching Lexicon. Most terms used below are defined on this website.
Below is a list of acronyms showing possible combinations to open the hand-made cryptex. If you cannot figure out the correct combination from the hint and provided website then you can always try the brute force approach by trying every combination in the list.
List of codes:
GZ
PO
TB
CO
TN
PQ
PI
Code hint: Initialism for the urushiol secreting plant indigenous to California.
A reaching TOTT may be of value - unless you have a tall friend.
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Oh yea - BYOP.