I thought it might be fun to bounce ideas off of each other on what we normally bring when we visit Spain. I'm not sure if this has been started before, but I notice that there are many anxious first-timers who are curious.

I'll add two things that I consider a must have for the type of travel I assume that many of us do (train, bus, etc.):

-multiple packs of the baby wipes; a million uses.

-Swiss army life; works well for peeling fruit on the train and for slicing some awesome queso for your bocadillo!

Anything else?