I mixed up these bubbles yesterday. We've taken them out two days in a row. I imagine this gallon of bubbles will last us quite a while.
1 gallon water
2/3 cup dishwashing soap
2-3 tbsp. glycerin
You can find glycerin in the pharmacy for a few dollars.
The bubble wands were found in the Target dollar spot. I've noticed that the bubbles worked even better the second day after the solution had some time to rest.
Fun, fun stuff!