There's not much, unfortunately. Almost all good SMN gear is Ex. Here are the things that come to mind:
Sacrifice Torque - Should be #1 if you don't have one. They're not expensive, they boost physical blood pacts significantly, and they make you totally immune to sleep if you have an avatar out.
Honestly the first thing you should focus on though, is AF3+2 armor from Abyssea. That stuff is seriously awesome, and not terribly hard to get. Takes some time, but it can be done with only a couple people or even solo. Another thing to focus on would be Magian staves (I'd at least do wind perpetuation, thunder perpetuation, pet magic attack bonus, and probably ice perpetuation for shiva as well), which obviously you can also do solo. The magian staves give -7 perpetuation for their corresponding avatar, which nothing else really comes close to except Nirvana.
Edited, Aug 16th 2012 8:16am by Pergatory
____________________________Pergatory (Asura, Kupo LS) WHM99 ~ SMN99 ~ DRK99 "If you want to know me, look inside your heart." -Lao Tzu