Yes, 'Cracker Crumbs' and 'Lemon Frost' and probably any of that family, make a great border. Very fast growing and easy to divide.
I personally wouldn't waste more time and money on the Blue Mouse Ears family except for BME which grows well. And maybe 'Church Mouse' with its ruffly leaves. I have found the family unstable and with the exception of 'Pure Heart' which I've had for only 2 years, any with white or lighter centred leaves has gone all blue within a couple of years. 'Frosted Mouse Ears' has also done well for me.
Another mouse, but from a different family, is 'Country Mouse' and it's delightful, fast growing and also easy to divide.
I'll post some pictures, but time is very limited this weekend. Also, if you scroll down the hosta threads, there was another a year or so ago on the same topic.
'Baby Bunting'
'Blue Mouse Ears' with a bit of 'Pure Heart' showing
'Church Mouse' (also with a bit of 'Pure Heart' showing)
'Country Mouse'
'Dragon Tails'
'Frosted Mouse Ears'
'Kifukurin Ko Mame'
'Kinbotan'
'Lemon Frost'
'Pixie Vamp'
'Tears of Joy'
'X-rated'
