I use wands with three garlands between a pair of fishing rods (I call them "Triple garlands" for convenience).
The countless bubbles it blows are popular with both adults and children, and are very photogenic.
I use plastic chains to make three garlands. (Plastic chains are a material often used by Japanese bubblers.)
The biggest advantage of plastic chains is that they are "lightweight". Due to its light weight, I can use a combination of 3 (or more) garlands. (The combination of water-absorbed cotton garlands will break the fishing rods or my arms with their relentless weight.)
Previously, I used garlands made of plastic chains for both the top and bottom strings.
Some time later, I replaced the top string with a mop yarn with the aim of increasing the liquid storage of the garlands and increasing the amount of bubbles.
I use fishing equipment (swivels and snaps) to prevent entanglement, and spacing to prevent bubble tubes from fusing together. Hand tie the end of the mop yarn to the swivel.
There is a trade-off between liquid storage and the weight of the wands.
This replacement leads to increased weight, but may improve liquid storage.
Please watch the video and judge the effect. I'm happy with its performance, so I'm still using this configuration (weight gain is minimal).
The combination of different materials may produce interesting effects.