Bubbles are a great fun for children. One can easily produce a large quantity of bubble water, for example, for children's birthdays.

What you need for soap bubbles

4 parts dishwashing liquid
1 part glycerin (available in pharmacies)
40 parts of clean, cold water
wire, not too thin

Stir glycerin and soap gently into the water avoiding too much foam.
Turn the wire into loops of different sizes,let some wire stick out to the side to hold on to.