Tomato juice is also disproportionately popular during flights compared to what one would normally order grounded. You can also buy tomato v8 juice from a shop, but there’s a reason taste changes when you’re flying, which they explain in the article.
I do, sometimes.
But when I can always get them it's less of a "treat".
There are a few things I only get intentionally when traveling for work so it's something to look forward to and brings something positive to the trip.
Sure, there are a lot of things like this you can do. It would eat up a minute of your time and cost a premium to buy a tiny packet of an individually-wrapped biscoff. Or you could spend ~$36 to buy a box of 300 biscoffs that occupy a space in your cupboard, and then every time you fly, you take one out of the box and put it in your carry-on, and resist the temptation to eat it unless you are 10km high.
Keep the box, set a chair in the middle of the living room, strap on a VR headset (viewer’s choice) and put on an airline passenger POV video from YouTube. Crunch away at your Biscoff.
You’re welcome. You just saved thousands of dollars.