An inflatable origami ball, also known as an origami water balloon or a paper balloon, is a suitable craft if you have a medium to advanced skill level in the art of origami. Use origami balls as decorations for a party, fill them up with water to create homemade water balloons, or use the technique to create a globe. To make this craft, you only need one sheet of origami paper in your choice of color or pattern.
Lay your sheet of origami paper on a flat surface, colored-side down.
Fold the bottom left corner upwards so that it meets the top right corner.
Unfold the paper. You have created a fold, called the valley fold, that runs from the top left corner to the bottom right corner of the square.
Fold the bottom right corner upwards, so that it meets the top left corner.
Unfold the paper. Your square of paper now has two horizontal valley folds that run between its opposite corners and intersect in the center.
To create a mountain fold, fold the square in half downwards, bringing the top left and top right corners to meet the bottom left and bottom right corners of the shape. You should now have a rectangle.
Fold the rectangle in half vertically, from right to left. You should now have a smaller square with a horizontal mountain fold running from the top right corner to the bottom left corner.
Lift the flap of the fold you just created so that it is standing up vertically.
Open the flap along the diagonal fold lines and flatten it with your hands. The flap now resembles a triangle.
Flip the figure over vertically. You should now have a shape that resembles a square with a right-angle triangle attached to its left side.
Lift the right-hand flap upwards so that it is standing vertically and then flatten it. You should now have a triangle in front of you. In origami terms, this shape is called a balloon base.
Fold the bottom left corner top flap of the triangle upwards so that it meets the top corner.
Fold the bottom right corner top flap of the triangle upwards so that it meets the top corner and is now parallel with the left corner flap.
Flip the paper over vertically.
Fold the bottom left corner of the triangle upwards to the top corner.
Fold the bottom right corner of the triangle upwards to the top corner. You should now have a diamond shape.
Fold the top flap of the left corner of the diamond toward the center of the figure.
Fold the top flap of the right corner of the diamond toward the center of the figure so that it meets the left corner.
Flip the figure over vertically. You should still have a diamond shape.
Fold the left corner of the diamond toward the center.
Fold the right corner of the diamond toward the center. You should now have a hexagon shape.
Fold the left side of the top flap to the side. You should now see a small triangle sticking out on the left side of the figure.
Fold the small triangle in half, so that its left corner meets its right corner. This will form an even smaller triangle.
Lift the triangular shaped flap of the figure, located under the small triangle you just created.
Open the top of the flap to create a pocket and tuck the small triangle inside it.
Repeat Steps 22 to 24 to create the right side of the figure.
Flip the shape over vertically.
Repeat Steps 22 to 25 for this side of the figure.
Blow into the hole at the bottom corner of the figure to gently inflate your ball.
Use regular paper cut into a square to do this craft if you do not have origami paper on hand. Note that since regular paper is heavier and sturdier, you may have to blow harder to inflate your ball.