This activity involves quite a bit of prep by an adult before the children take part in the activity. You need to collect some colorful laundry detergent bottles. Some of the bottles we used were from laundry detergent and some were from dishwasher detergent.
You need to cut off the top and the bottom of the bottle. I use a knife to "stab" a hole in the bottle in the area I am going to be cutting, then I used kitchen shears to cut the plastic.
After you have the top and the bottom cut off, you need to cut a line down the center of the side opposite the handle. (Most bottles have a seam here anyway, so it is easy to follow the line to cut). Then you can push the sides of the bottle open like this:
The handle becomes the body of the butterfly, Use your imagination and cut the wings in whatever shape you would like. You can save the plastic you cut off to make shapes to glue on later.
Some detergent bottles have easily removable labels. Some do not. For the ones that do not, you can leave the labels and cover them as part of your design. You can paint them with spray paint made for plastic, or you can cut another large piece of plastic and glue it over the label.