Unless they were as strong-minded as us

 Magrat dutifully dug out three heaped ones. It would be UGGS On Sale nice, she thought wistfully, if someone could say 'thank you' occasionally.
 She became aware that the crown was staring at her.
 'You can feel it, can you?' said Granny. 'I said, didn't I? Crowns call out!'
 'It's horrible.'
 'No, no. It's just being what it is. It can't help it.'
 'But it's magic!'
 'It's just being what it is,' Granny repeated.
 'It's trying to get me Nike high heels to try it on,' said Magrat, her hand hovering.
 'It does that, yes.'
 'But I shall be strong,' said Magrat.
 'So I should think,' said Granny, her expression suddenly curiously wooden. 'What's Gytha doing?'
 'She's giving the baby a wash in the sink,' said Magrat vaguely. 'How can we hide something like this? What'd happen if we buried it really deeply somewhere?'
 'A badger'd Jordan heels dig it up,' said Granny wearily. 'Or someone'd go prospecting for gold or something. Or a tree'd tangle its roots around it and then be blown over in a storm, and then someone'd pick it up and put it on-'
 'Unless they were as strong-minded as us,' Magrat pointed out.
 'Unless that, of course,' said Granny, staring at her finger-nails. Though Nike high heels the thing with crowns is, it isn't the putting them on that's the problem, it's the taking them off.'
 Magrat picked it up and turned it over in her hands.
 'It's not as though it even looks much like a crown,' she said.
 'You've seen a lot, I expect,' said Granny. 'You'd be an expert on them, naturally.'
 'Seen a fair few. They've Nike heels got a lot more jewels on them, and cloth bits in the middle,' said Magrat defiantly. 'This is just a thin little thing-'
 'Magrat Garlick!'
 'I have. When I was being trained up by Goodie Whemper-'
 '-may sherestinpeace-'
 '-maysherestinpeace, she used to take me over to Razorback or into Lancre whenever the strolling players were in town. She was very keen on the Nike high heels theatre. They've got more crowns than you can shake a stick at although, mind-' she paused - 'Goodie did say they're made of tin and paper and stuff. And just glass for the jewels. But they look more realler than this one. Do you think that's strange?'