Yes, all of these are effective for sure! We've done the renewal chocolate for the past few years, and are actually thinking of doing it as an acquisition incentive for new subscribers as well. People love it. Thanks for your thoughts, and I'll definitely check out those slides!
I like the idea of "you just expired" and "we missed you at X event!" definitely worth a shot to see what the response rates are like from there on. Thank you for your thoughts! If anything else comes to mind, please do not hesitate to post more.