Modular origami is a paperfolding technique which uses two or more sheets of paper to create a large and complex structure that would be impossible to make using single-piece origami techniques. 

Each of these "spiked pentakis dodecahedrons" is assembled from 60 individual sheets of paper. 

These pieces make great desk art, bookshelf decor, coffee table conversation starters, and even look great hung from the ceiling!