Unfortunately, the only underlying announcing earnings next week that has sufficient implied volatility to consider selling premium in is NFLX, with an implied volatility of 52%.
It announces earnings on Monday after market close, so look to put on a play some time on Monday, preferably right before the NY close.
Preliminarily (I'm checking this crap in off hours, so it's rarely spot on), here are the metrics for the two setups I would consider doing:
NFLX July 29th 85.5/111 short strangle
Probability of Profit: 74%
Max Profit: 215/contract
Max Loss: Undefined
Break Evens: 83.35/113.15
NFLX July 29th 81.5/85.5/111/115 iron condor
Probability of Profit: 70%
Max Profit: 99/contract
Max Loss: 301/contract
Break Evens: 84.51/111.99
Naturally, strikes may need to be tweaked slighly depending on price movement on Monday.