Bubble ring

thingiverse

The child blew a large bubble that floated into the air and popped suddenly as it made contact with an invisible thread attached to her friend's finger. The kids watched in delight as the friend quickly pulled back on the string, causing another large bubble to form at the end of the wand. This time, the friend carefully blew the bubble out over a nearby bucket, where it landed with a gentle plop and began to float away slowly across the water.