The over limping range is somewhere around QQ-22,A2s+,K9s+,Q9s+,J8s+,T8s+,98s,87s,76s,65s,A2o+,K To+,QTo+,JTo (I know some of the really passive players literal do not raise any hand, but not sure if it is worth including KK and AA).I have seen over limps with J8o. At these low stakes people can limp with nearly any two. The above range is 30% of hands, which can still be too tight. A8o has a 50% equity vs that range, but the more important thought is that if they are really really bad they will call with 100% of that range and likely play it fit foldish or just stick around with their draws, which my ace high will be ahead of. If they aren't too bad they will end up droping something like 50% of the above range and still play it passively. In the end I try hard to play as many pots against passive players as I can, because even I can't get into too much trouble.

!luck