Ingredients: About a bucket of soft water. Rainwater is best, but regular tap water is nearly as good. Add about ten fl. oz. of "Dawn" dishwashing liquid, and a tablespoon or so of Glycerin. You can get Glycerin at the pharmacy.
Mix well, and let sit overnight or for several hours.
Use a strip of fabric attached to a stick to make REALLY ENORMOUS bubbles. For more manageable ones, use pipe cleaners joined together in a circle. Be brave! Of course, you can use your hands too.
Warning! Avoid putting your soapy fingers in your eyes! If you want to close up the end of the bubble as in picture 2, you need to twist your pipe cleaners or fabric strip so that the sides touch. Close the circle. That "frees" the bubble.
Let us know if you have an even better recipe. And see if you can come up with more cool techniques! Tell us!