I think those are called "tatos". Here are some examples:
http://www.origami-resource-center.com/tato.html
and the Victorian Puzzle Purse might fall into this category:
http://www.origami-resource-center.com/puzzle-purse-instructions.html
Diana
Regarding the new book by Katherine Heiny "Standard Deviation"--
I read it and enjoyed it a lot. But if you are an origamist who considers him
or herself to be "normal," be prepared to see yourself through a very different
lens (i.e. the rest of the world).