These are the famous cotton ball w/legs that have been posted here since the beginning of this forum.....which goes back into the archives something like 14 yrs.
They were called fluke eggs for a long time, then lyme, now another group is calling them Ascaris egg nest. Many report not eating bananas...so I doubt that is what they are. Who knows....unfortunately there is no scientific studies on the specimens to go by at this time.
If they are egg nests of some sort, good to get them out before they hatched!