No disrespect intended, but why worry about a lost baggage tag in the first place? I don't even use them -- I've got sturdier tags of my own.

The membership card is another matter, especially if you frequently travel on partners where it can be important (although less so, as some of them are able to look you up in the computer for lounge access and such if you're eligible). I could see being willing to pay some cash or miles as a replacement fee for that.