Look out, some rocket science coming at you:
To remove the chance of illicit sales, there are spots in the upper right of the pass: Name, Date, Flight. Usually MLL agents fill in all the requisite details, but nowhere does it say this must be the case.
* So if you want to gift/mail it to a stranger, write their name in there.
* If they might be travelling with a family member or friend, get their names too.
* If they feel like specifying flights instead, that'll work.
* Worst case, DIY expiry by writing in the month that they said they would travel (eg Jan).
- This one doesn't eliminate sales wholly, but sure makes it da-- inconvenient.
If you trust the person, skip them and give them a blank "$50 cheque"... or as the black market values them, more like $30 (Still ambitious IMHO).