For Christmas, I'm sure many people are looking toward possibly buying one of those prepaid Mastercard or Visa cards. I would say DON'T buy one of these as a gift.

Prepaid Visa & Mastercards Are Worse than Store-Branded Cards as Gifts

It's like giving money that's less useful than money. Why would you want to do that? People like money, and I don't believe (unless it's really thoughtful) much in giving out non-unique gift cards when one could just use the cash.