PA.1.Computer

Sometime along the way, (I'm not clear on exactly when, possibly when Ami is awakened as Sailormercury) Sailormercury recieves a 'Mini Supercomputer.' This computer looks like a rather large compact, it is ice-blue, and has the symbol of mercury in gold on the cover. The cover flips up to reveal a small keyboard and probably some other stuff, and the cover becomes the screen, just like any other laptop. Sailormercury uses her computer for many things, not only as a senshi but in school and other times as well. As a senshi she uses it to scope out enemies, and locations of interest. I can only guess at what she uses it for at other times.

PA.2.Harp

Ami uses this little harp in her attack, Mercury Aqua Rhapsody. She plays it and millions of tiny ice-projectiles shoot out towards her opponet. The harp is small enough to hold in her hands (obviously) with the symbol of Mercury on the scroll(?). In the anime it is much larger and is made of water, it looks something like a bow-and-arrow, without the arrow of course. She gets this attack when she turns Supersailormercury, or Sailor Star Mercury, or maybe Eternal Sailormercury? I'm not quite sure so don't take my word for it.

PA.3.Headset

Sailormercury has a headset much like the Sailorstarlights have, hers is a bit less flashy however: the earpiece and microphone don't have a star on them, and she doesn't wear hers all the time. I assume it's used to keep in easy contact with the other senshi, easier than the communicator watch, but more conspicuous. I have no idea when she got this item, or by what means but I don't think she got it when she was awakened by Luna. In the Anime Sailormercury doesn't have a Headset

PA.4.Pen

This pen is what Ami uses to transform into Sailormercury, called a Henshin Stick. She raises it above her head and screams her transformation phrase. In the Anime she gets two, one when she is awakened and one when she is 'promoted' to Super Sailormercury. (?) It basically looks like a pen. It's thick, light blue and has a gol ring around the middle. In the Anime it was the symbol of mercury t the top, I'm not sure if it has anything at the top in tha manga.

PA.5.Visor

Sailormercury also gets a special visor when she is awakened. She uses it to scan her surroundings, to check out enemies' weaknesses, to zoom in on things etc. In the Anime she activates it by tugging on her earring. Unlike her computer, she does not wear this when she isn't a senshi, that would just be weird.

PA.6.Watch

Somewhere throughout the course of the story the Senshi get special 'communicator watches.' They are used, obviously, to communicate with the other senshi. Kind of like a walkie talkie, but more convenient. This way, the team can split up and search for something or some one and not have to scream to the others if they find it, or they can go off to do different things and still have easy contact. But that is pretty obvious. The watches are also helpful because, unlike the headset, they can use them while not in Senshi form. Mercury's looks like just a normal watch, blue I suppose.