My sister has my grandmother's krumkake iron, but I found a similar one here (http://www.ecost.com/ecost/echw/shop/detail.asp?dpno=298828). It's a stovetop model and it doesn't care what kind of stove, which is nice.

You could probably also use a pizelle iron... I just ran across this type of thing in the hearthfire cookbook I'm reading at work. I'll see what he suggests.