Maybe not really höpö-höpö but maybe also not deserving a new thread of its own, Finnair has now also joined the club of strict(er) rules for powerbanks etc.:
https://www.finnair.com/fi-fi/bluewi...nnolle-4137742

In short, using or charging powerbanks is not allowed, there are restrictions to their placement in the cabin etc. On LH planes, you are still allowed to charge your phone and PC etc. from the onboard power.

Cheers,

Tseta