Things I miss:
Starbucks - Andes mint brownie, lemon ale (no there was no alcohol in it), Valencia orange refresher, blended lemonade
Burger King - salad with grilled shrimp
Kinley bitter lemon - I'm not sure if the World of Coke still has the drink in their sampling room, but I know for a fact that you can no longer get it in Europe.
European Kinder eggs - Apparently the U.S.A. thinks the European version is a choking hazard.
Japanese honeydew sorbet - When I was growing up in Japan, we had these honeydew melon sorbets that were in little containers that were shaped like honeydew melons. I went to Japan in 2017 and could not find them.
Also, I miss Japanese Coca-Cola. You unscrewed the cap and it made a funny popping sound. I jumped the first time it popped.

There's several more I know that I've missed, but I need to go to bed.