jmoore

A south facing window sill on a sunny day will be plenty warm enough and it gives you the alternating temperatures you need. You could put a plastic bag over the pot for added humidity.

I wouldn't use the paper towel method. Plant them in a multipurpose compost and as I've mentioned put them on a window sill.

Not sure what a musa 'tiny' is, but it sure won't germinate after two weeks, if at all. Stick to varieties that have a proper name to start with. Like musa velutina and musa balbisiana.