Materials & Tools:
Paper -- Any size
Scissors -- If you need to make a paper into a square
Bear with me, this is my first instructable.
Step 1: Paper
1. So first, Fold a corner down to the edge of the paper until both edges are flush with each other.
2. then, cut along the bottom edge of the fold.
Step 2: First Folds
Next, on the horizontal fold, (This is hard to describe) pinch it together and then push the whole thing down from above. look at the pictures for guidance.
Step 3: Step 3
Repeat for back.
Step 4: Step 4
Step 5: Step 5
For the bottom flap, fold it halfway up. then, fold it so it is sitting flush to the side, and tuck it into the flap made in the previous step. repeat for all of the other, but bear in mind that this can only be done to the bottom half.
Step 6: Creasing (Optional)
Step 7: Cube Inflation
Now get creative! Perhaps... a Paper Companion Cube?!