[atmz]

Seconded; not sure how easy it is to get one if you don't already have a brokerage account, but no annual fee, no foreign transaction fee, and no ATM fees is great. It's a debit card, but that's better for international travel, as you'll need to take out cash, and I don't think you can get credit cards that won't charge a fee for a cash advance.

(As an aside - never never change cash for travelling abroad, the commissions/spreads are ridiculous)

As for bitcoin, I feel that the volatility with respect to regular currency make a debit card not that useful unless you're an ideologue or want to speculate/easily get cash out