Credit cards which earn frequent flyer points is a popular way to earn frequent flyer points. You can receive thousands of points on everyday spend. And, many of these cards offer generous signup bonuses! Compare to find the credit card that best suits your needs.
The do have the concept of a 'nominee' that claim awards from your points but not sure if that is really what you are after, ok if you know what flight etc they want you can nominate them and you or them can request the ticket/upgrade etc.