I just completed a new prop for the Jedi costume I've been working: the Jedi communicator. From all the research I've been doing online, it looks like the various communicators are somewhat the same but not all identical.
It's been a little while since I looked at the Rebel Legion's costume standards page for a generic Old Republic Jedi, so I gave that a quick check today.Which I was glad I did...I realized i need to pick up two more small belt pouches. I'm going to hold off on dying the one I have. It's kind of expected that you have some accessories, that aren't toys, to be a member.
Some of the pages I looked at for communicator inspiration and guidance were Kin-Char Bamin, the Grand Florida Alliance, and the Padawan's Guide (of course!). Fun Star Wars fact to share: did you know the communicators from Episode 1 were made from ladies Gillette Excel razors? They are super difficult to find now. I couldn't find one in any store, so I bought mine from a seller on eBay.
So here's what I used to make my communicator:
--1 pink ladies Gillette Excel razor
--Instant Krazy Glue, in the craft bottle
--1 can of Rust-O-Leum Painter's Touch in Aluminum
--1 can of Rust-O-Leum Painter's Touch in clear coat (You aren't going to use entire cans, it's just what I swiped from my husband's stash of goodies.)
--2 scrapbooking brads--unknown size of these, but they were part of the Craftster Flat Rate Paper Craft Supply swap
--2 nuts, from the garage here, the brads just happen to fit perfectly inside these
--assorted washers, I used four
--assorted flat pieces of metal, bought from a local Ace Hardware, I used 9 and don't even remember what they were called
--2 air valve caps from my bike (replaced with some new ones from Christmas)
--2 aluminum rivets, also from Ace Hardware
--tiny bit of red craft paint (for the end of the rivets)
In the interest of not overloading you with progress pictures, I'll just post three:

What I started out with.

Finished front.

Finished back.
More progress pictures can be seen
http://amylynn98.blogspot.com/2012/03/one-step-closer-to-being-jedi.html. Thanks for looking!