The Biblical Archaeology Society has a survey for current subscribers that takes not more than 5 minutes and after which you can supply a mailing address to receive a free Dead Sea Scrolls mug.
This normally sells for $10.
Unfortunately, they don’t have space for comments. If they did, I’d complain that they sell my address to others. Ironically, in the email requesting subscribers to do the survey, they say, “We will not sell your mailing or email address and nobody will contact you as a result of your responses.” But they do sell your magazine subscription address without asking or telling you.