It should work with either a debit card or a prepaid visa debit card, tho they have a fee usually about 3-6 bucks to buy and are avalibe in 25, 50 etc. and are available at most grocery stores these days and in some cases you can reload them and reuse them.
Amazon does accept them tho there are some restrictions listed here
http://www.amazon.com/gp/help/customer/display.html?nodeId=201132770I would suggest seeing what's available at a store near you then email amazon and double check to see if it would be acceptable. They are pretty quick on their response.
When I got a tablet I wanted to browse the free stuff but it wouldn't let me buy anything (it was free) with out having a credit or debit card registered to the account. I got one of these, attached it to the nook and no problem. Then I spent it. This was also good so if I let my son play with it he couldn't accidently buy any thing.