I like it how in Scandinavian languages tack/takk means both thank you and please :)
Snälla is like kindly, as in "would you kindly do this for me?" And tack is thanks as in "would you do this for me, thanks" but with none of the sass that it might imply in English. It means "thanks" but is used for all intents and purposes as a "please" here. Both can be used, though I think tack is more common.