The gift needs to be able to come off as a genuine gift so there’s some plausible deniability…
Edit: Just so it’s clear, this is purely hypothetical. I just thought of the idea and thought it would be funny to see what a random person on Lemmy might think. This isn’t a serious request and none of the suggestions will ever actually be used.
Something utterly meaningless, like a bag of generic candy, from the closest corner store “wrapped” only in that store’s type of plastic bags, clearly purchased last-minute on your way over to them. As they unwrap it you slip an “oh, I forgot to take that” and snatch up the receipt that you’ve forgotten in the bag, but only after they’ve seen that the item was on sale for $0.99.