Blodwen is gaining confidence by the day and she does like licking and chewing our toes. She does respond to a firm no, so does stop, but then goes for them again - but I think she carries on because she wants attention! The other option has been to shriek loudly if her bites are hard which does stop her too.
I wouldnt put her in her crate in response to this, I try to give her chewy substitutes like her toys which she more than happily takes away at the moment. But as I mentioned, her confidence is growing all the time now, so she keeps pushing to see what she can get away with!
I am sure the links above can provide better more experienced advice!