Salt water taffy or Reese's peanut butter cups would be good choices. Just don't be offended if they don't open it or try it in front of you. That would be considered bad manners.
If you're looking to try a few of the special food items around the resort, there are a couple that you might want to work into your plans. The giant gyoza bun, the Donald Duck life preserver bun, and pretty much anything from Lost River Delta get insane lines later in the day. The pork ribs weren't as popular from what I saw (still delicious though).
You could probably get multiple rides on Journey if you get there right after grabbing a Fastpass from Toy Story or ToT. That area doesn't get very busy in the morning anymore as crowds seem to be spread between Toy Story and ToT with Raging Spirits still being a big draw as well. The gyoza bun stand is also in that area.
As for Indy, I had never been on the Japanese version before last week, but it seems to have some of the updated effects added to the Anaheim version in Anaheim's last rehab. Not sure if Tokyo always had those or if they are new as well.