A former flight attendant shared three hacks that most passengers don't know about. This one's for women. The bathrooms have free tampons and pads, and if they run out, just ask the flight attendant and they'll get more.
And did you know that ANYONE can use the first class bathrooms? Just be cool about it and don't stand in the galley.
The third one can be profitable. If the flight is over-sold, they offer passengers deals to take other flights. The hack is, DON'T accept their first offer. Always go to the gate agent and negotiate for price or perks.