Do a few ibuprofen take up much less room in a suitcase? Absolutely. Can you take them discreetly without people noticing? Yes.
The TENS is a little larger, but not massive. And mine makes an irritating beep when I adjust the currents. Some of the electrode placements I can’t really apply unless I retreat to a bathroom.
Thankfully, I have lost all my remaining giveafuck and I’m fine with being the weird person with the mystery device if it means no pain.