Hi there, this is Emmett, and when Makerblock found out I was a fellow origamist, he invited me to post some of what I've folded.  I like modular origami, so that's mostly what's here.  I didn't invent any of these designs, but I honestly can't remember any more where I found the instructions.

This buckyball is made of 90 pieces of paper, 5 each of 12 colors plus 30 white.

A cube made of six pieces.

A Kawasaki Rose.  One of the only things I know how to fold out a single piece of paper, and probably one of the most difficult (for me at least).

I don't remember what this is called.  It has 30 pieces, 5 each of 6 colors.

Five intersecting tetrahedra.  It's sort of cheating because each piece starts as a 1x3 rectangle instead of a square.  If you look closely you can see the dodecahedron and icosahedron formed by the tetrahedra.