How to Make a Butterfly from a Plastic Straw and Scratch Paper
With a plastic bendy straw and a piece of paper, you can make your own beautiful butterfly. First, squeeze the end of your straw flat and cut it vertically from the top to the flexible part. You'll also need to cut a curve in the flexible part to make your butterfly more realistic. Then, fold your paper in half and draw a butterfly wing on it with the middle where the crease is. That way, when you open the paper, you'll have 2 identical butterfly wings. All you need to do then is cut the wings out as one piece and insert them into the end of the straw.
Flatten the top of the straw, above the flexible part.  Cut the straw vertically from the end through the first two ridges on the flexible portion.  Hold the straw firmly so that it does not shift. Cut the two antennae. The side with the antenna is the back of the torso. Draw a curve, cut it, and stop 1 cm before the flexible part.  Cut the abdomen. Draw a curve from the back to the chest and cut it. Stop just before the end of the flexible portion. Curve and cut the corner of the end without the antenna. This is the only part of the straw you'll throw away. Make a diagonal cut on the belly side, slightly above the flexible portion. It is V-shaped when opened. Fold a small piece of paper, like a Post-It note, in half.  Draw and cut out the shape of the wing so that the fold is along the butterfly’s back.  Open it up. The symmetrical butterfly wing should be completed. Open the straight part of the cut straw. Insert the wing-shaped scratch paper into the torso. The side with antennae is the back. Insert the end of the V-cut ventral slip over the paper into the dorsal (marked by the flexible part).  Bend the belly while keeping the antennae straight. Insert it into the V-shaped notch, and adjust the length of the body. Adjust the angle of flapping of the wing itself.  Make more and decorate them. You can make colorful butterflies by coloring or adding stickers on the wings. Add googly eyes to make a butterfly with character. You can use shampoo or liquid detergent containers for the wings, too; they are water-resistant and robust because they are plastic. Use these butterflies to decorate a garden planter. Enjoy your butterfly! Here's example of how to use your straw, to decorate a glass: Cut the stick to the desired length. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f4\/Butterflybodycut1.png\/460px-Butterflybodycut1.png","bigUrl":"\/images\/thumb\/f\/f4\/Butterflybodycut1.png\/728px-Butterflybodycut1.png","smallWidth":460,"smallHeight":87,"bigWidth":"728","bigHeight":"137","licensing":"<div class=\"mw-parser-output\"><p>Image by: Uploader<br>\nLicense: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/creativecommons.org\/licenses\/by\/3.0\/\">Creative Commons<\/a>\n<\/p><\/div>"} Make a cut as shown in the illustration. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/a2\/Butterflybodycut.png\/460px-Butterflybodycut.png","bigUrl":"\/images\/thumb\/a\/a2\/Butterflybodycut.png\/728px-Butterflybodycut.png","smallWidth":460,"smallHeight":87,"bigWidth":"728","bigHeight":"137","licensing":"<div class=\"mw-parser-output\"><p>Image by: Uploader<br>\nLicense: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/creativecommons.org\/licenses\/by\/3.0\/\">Creative Commons<\/a>\n<\/p><\/div>"} Place the straw so the curve is at the edge of the glass. Open the straw and pinch the edge of the glass. 
Flatten the top of the straw, above the flexible part. Cut the straw vertically from the end through the first two ridges on the flexible portion. Hold the straw firmly so that it does not shift. Draw a curve, cut it, and stop 1 cm before the flexible part. Cut the abdomen. Curve and cut the corner of the end without the antenna. Make a diagonal cut on the belly side, slightly above the flexible portion. Fold a small piece of paper, like a Post-It note, in half. Draw and cut out the shape of the wing so that the fold is along the butterfly’s back. Open it up. Open the straight part of the cut straw. Insert the end of the V-cut ventral slip over the paper into the dorsal (marked by the flexible part). Bend the belly while keeping the antennae straight. Adjust the angle of flapping of the wing itself. Make more and decorate them. Enjoy your butterfly! 