First Appeared: Act 6
These items are really only one- the silver bracelet allows for the transformation to happen, but it turns into the Jewelry Star Bracelet when Jupiter is transforming.
This cell phone has the ability to act as a communicator with the other senshi, act as a plain phone, and also to act as a disguise device. If Makoto takes a photo of someone she will transform into that person. Makoto uses her phone somewhat irresponsibly once (to go on a date in nice clothes) under Usagi's prompting, of course.
First Appearance: Act 20
This is to gain entry to the senshi's headquarters in Crown Karaoke. Luna created all the passports after "borrowing the space" at Crown.
First Appearance: Act 26 & Final Act
The tambourine is a weapon in which energy can be conducted through. It helps to amplify her power, and in the final act Jupiter transforms her tambourine into a spear.