Most practical models are of a simple to mid intermediate level, unlike representational origami for example (animals, characters, fictional creatures, etc). There are models like To be or not to be by Andrey Ermakov or The nose - An eye glass stand by Jens Kober, which aren't simple at all.
https://www.flickr.com/photos/origamiru/7006390367/ https://www.flickr.com/photos/jenskober/6854850960/ I'm looking for other practical models of that level of complexity, but haven't had any luck. Can you please help me find another one? I would really appreciate it! With so many models in the world there has to be another one. Thank you as always : ) Gerardo gerardo(a)neorigami.com