Yeah defo... There seems to be loads on eBay in Japan
https://www.ebay.co.uk/itm/186118670344?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=VLVxzDI0Swq&sssrc=4429486&ssuid=lJ1Rek1MRRG&var=&widget_ver=artemis&media=COPY
It's mad I know!
My wife and daughter have been buying all sorts of nonsense...
I thought I'd have a look to see what the fuss was about and lo and behold... 😮
As little as possible... I've discovered lowering tension via detuning and having a good rubbing up and down the length with a wonder wipe...
So far so good 😀