KRE (Regional Banks): I haven't played this one before, but its background implied is at 25%, putting it slightly above its mid-range over the past six months (it's in the 54% percentile or so). I generally like to see exchange-traded funds at >70% implied percentile over the past six months and implied at 35% or more, but if I abide by those metrics, I'd be totally sidelined here. (The May 19th 49/54/55/60 "nearly an" iron fly pays 2.53 at the mid with a buying power effect of 2.47; preliminary/off hours quotes).
EWZ (Brazil): In spite of the fact that its implied has been a good deal higher over the past six months (background implied is at 32% -- in the 28th percentile over the past six months), it still has some decent premium to be offered if you're willing to short straddle or iron fly. (The May 19th 33/37/38/42 iron fly pays 2.12 at the mid with a buying power effect of 1.88; preliminary/off hours quotes).
GDXJ (Junior Gold Miners): This is one I was actually looking to play directionally off of support, but waited too long to put on the play, so now it's "nondirectional" for me or nothing. (The May 19th 30/33/40/43 iron condor pays 1.21 at the mid with a buying power effect of 1.79; preliminary/off hours quotes).
VIX: With VIX , my eyeballs are always peeled for a "Term Structure" play if there isn't a pop to be had. Unfortunately, neither a pop nor a Term Structure play are to be had currently. VIX spot is at 12.4, and the first /VX front month that currently is >16 is September -- way too far out in time for me to put on a play (I currently still have June 17/20, and July 16/19 short call verticals on).