Since there were no good bubble blowers on thingiverse, I decided to design my own using as inspiration one I saw the other day. The design is very simple and it can be used to make many small bubbles or one large bubble depending on what side you blow from.

Bubble liquid: link

I advise printing the one piece bubble blower, it's really easy to print and it yields the best result out of the 2 options (bubbles-full.stl). make sure the small tubes are facing down and use support material.

Assembling instructions: Both pieces should fit nice and secure out of the printer, gluing then is advised but might not be necessary. In case they don't quite fit together, use sand paper so slowly sand the edges of the disk with the holes until there is a snug fit (I would still recommend gluing then with ca or epoxy)

Printing settings: I personally used both PLA and TPU, PLA turned out to be the better material. 20% infill, 2 bottom layers 4 top layers, 2 shells.

https://www.youtube.com/watch?v=jj6rqDkX4gk