Lachesis nodded thoughtfully. "Yes, a physical focus would be best for this kind of work. Something that will help you to find the strands of the narrative and coax them into the right shape. We use a loom, because thread is our affinity, and because we typically work on a larger scale. For your purposes, though..." She tapped a finger against the edge of her teacup, considering.
"Let the raw material attune to them first," Clotho suggested. "Thread or ink or paint, whatever you choose to work with, they should each spend some time handling it."
"Yes," Lachesis said slowly. "A sympathetic link, that's good. That will give you a firm fix on their narrative, and it may help ensure the working takes hold. Do you favour any handcrafts?"
Atropos, nibbling on a slice of cake, said nothing.