On the way back from your beauty trip... what aftercare products did you bring home?

I'm returning from Korea and I'm struggling to decide what aftercare products I should bring back. I tried various things there during the first few days after treatment, like cooling masks and silicone sheets, and I want to continue the same routine once I'm back in Japan.

What did you all actually bring back? I'd especially appreciate any information on items that were helpful during the flight or the first few days after returning home. Cooling sheets aren't heavy, and there seem to be many different kinds of seasoning gels...

Honestly, I know what works for one person's skin is different, so I'd like to hear about your experiences, like "I'm glad I brought this back" or "I didn't need this," for reference. I also want to avoid wasting money, so any advice would be greatly appreciated!