A paper water ballon is very versatile and can be used as anything from a decoration to a destructive water bomb.
Step 1: Fold the Paper Into a Triangle
There will be a strip of excess paper that must be cut off. The dotted line in the picture is where to cut.
Step 2: Fold Into Triangle Again
Unfold the paper into a square and repeat the last step folding the other way this time.
Step 3: Collapse Two Corners Inside and Form Another Triangle
Collapse the two sides in and form another triangle.
Step 4: Fold Up the Lower Edges
Fold up the lower edges to the top point. Do this on both sides. Then fold in the middle corner half way, do this four times.
Step 5: Fasten It Together
Using the four small sections at the top of the paper fold each one into the middle corners that were folded in the last step.
Step 6: Finishing Up the Balloon
There will be a hole at the top of the balloon. Blow air into it until full. If you want a more square balloon the fold the bottom an top edges at 90 degrees.
Step 7: Paint Balloon (optional)
If your making lots of balloons and want different colors then you can lightly spray paint them from about 15-20 inches away.
Step 8: Filling the Balloon
At the top of the balloon there will be a hole. Blow air or pour water directly into the hole while gently supporting the sides with your fingers.
Step 9: All Finished!!!
Be sure to use balloon shortly after filling to prevent leakage.