SPX

BTO Oct-18-21 4350/Oct-13-21 4350 Call Calendar @16.35 – a bet that SPX will hang around this 50+/- range

BTO Oct-18-21 4200/Nov-05-21 4200 Put Calendar @ 30.5 – there is a large void of OI for puts between Oct/Nov monthlies, below 430 for SPY. A few times to roll, and good RR, for a few weeks of protection.