I'm not really sure what these are called - around the internets I've seen them called moravian stars, froebel stars or German stars, and I like the Danish flettede stjerner (natch) - but here we've taken to calling them crackstars as they seem to be just a touch addictive to make.
Tonight I had a friend over for a gingerbread fuelled folding session.
I'm going with mostly traditional red and white, but I also cracked open some of the special papers I bought in Denmark last year - lovely foily silver strips and also these pretty ones with text and patterns printed on them.
If you're interested in making some crackstars of your own there is a great pdf instruction sheet here, and also lots of videos like the ones on this page to help you out.
I bought star paper (you need four long strips of paper for each star) from Starcrosses on Etsy, and whilst I haven't shopped there I have also noticed the Starcraft also has a good range of colours of paper, in a couple of different sizes.
If you do try your hand at star folding I'd love to hear how youu go!