My Guardian carries G5 Me Sight, Bowtech 6 arrow one piece double grip quiver, Trophy Taker drop away, String silencers, Bow Jaxs, STS String Suppressor, Wrist sling, Peep and Specialty Archery Hunting Stabilizer. I like a quiet set-up above all else
I like using the Primos bow sling alot too, it come in mighty handy but I don't know if you'd consider that a bow accessory.
I went to a lighted sight when I started hunting bears out of my Double Bull ground blind as you can't pick anything up inside of that when it starts to get dark. I went through a few lighted sights before I found a good one. Most were too bright and you couldn't see anything beyound the pins. With the G5 just the ends of the pins light up, they aren't too bright and it now has an adjustable dimness level.
I like lots of light so I drill my peeps out, can't remember if it was 1/4" or 5/16" or 3/8". I'd have to go look at it. I know its a pretty big hole but I can use it as long as I can see otherwise.
If you like quiet I'd get some type of string suppressor if the bow doesn't come with one. Even on a real quiet bow like the guardian it makes a huge difference.
The role of a stabilizer has changed over the years. It was originally designed to assist with stabilizing the bow and follow though leading to increased accuracy. It is now used in hunting bows as a vibration/noise reduction device and has nothing to do with stabilization as most are too light to offset anything.
If you sight your bow in with a fully loaded quiver I wouldn't take it off once in a treestand as it will affect your accuracy unless it is a close shot. If you plan on hunting without a quiver, tune your bow in without one on. Just my opinion.
I used to use a hip quiver (Chuck Adams Super Slam) at one time but they aren't as good for stalking or stillhunting situations as the arrows will catch on brush and make noise or actually get pulled out. A bowquiver is much better for moving through brush. If your strictly stand hunting then it doesn't matter.