I tore out a bunch of colorful pages from a magazine. I could have used the print pages too, but thought they'd enjoy colorful squares for now. Next I folded and cut the pages in half to make squares a little smaller and also to give me three straight edges to fold squares.
This can be done one page at a time, but I found it went faster doing it production style. One step on all pieces, then move to the next step on all pieces.
Next was to do the diagonal fold to establish a square so I know where to cut.
Almost done, cut the squares out.
And finally, flatten them and put them in a box. Yay for free origami paper!!