Howdy!
In making new target rings, I always find myself wracking my brain to figure out where I can find
linked encounters of non-aggressive mobs, especially ones that con at higher levels (grey mobs are easy to find!). I like to take close-up screenshots of primary and implied target rings without worrying about those pesky spell effects getting in the way or dying horribly mid-screenshot.
If anyone has any recommendations, I'd love to hear them! Maybe we can compile a list (zone names, mob names, and even locs) that others will find useful as well.

Any level will be useful, since I have a lot of lowbie alts...but the non-aggressive con bit is what's important.
Here's one to start off: The antelope in Thundering Steppes are non-aggro and can often be found in linked herds. They wander, though, so you have to be careful about walking into something that's less than friendly if you follow them around for a while.