@fillippone this is truly one amazing megapost and you even provided videos for lazy people (cool music but I expected something more Italian).
Ah. Challenge accepted. Bear with me.
Regarding washers disposal, I think we can be satisfied with the more easy easy of disposal: dustbin, diapers, tossing into rivers… weather balloons, volcanoes and interplanetary ships might be a fun idea, but ultimately an overkill.