I have to say that I’m a bit bemused by “the dangers of a washing up bowl”, because, like anything else you use in the kitchen, if it’s cleaned between uses (ie, wiped round, including round the lip of the bowl, maybe a splash of bleach if it looks particularly grubby with tea stains, etc) and left to dry by either standing it on its side in the sink, or, if your sink is narrow like mine, placing it each side of the sink so it’s sits across the sink, then I don’t see how it is dangerous. Like other posters, wash the least soiled items first, starting with glassware, then finish with pans, followed by a good wipe round as above. Been doing this for years - still here to tell the tale ?. (I do use my dishwasher a lot, though, but the bowl is still very useful).