Field guide No. 576
Pillow softens a river stone
Soft enough to sleep on. Nearly.
A lilac linen pillow on a white bed blends into a smooth grey river stone, the cloth gathering where pillow becomes rock. Half a good night's sleep.
Field noteLinen and granite don’t blend. Here a pillow and a river stone are one thing, gathered at the seam.
Also possible, also breaking material
Ash flames bend without fireGrey ash holds the curl of flames above charred logs. All the fire, minus the heat.
Hedgehog with bubble tipped spinesSpines end in clear bubbles that ought to pop on the first step.
The bread remembersGeodes form in hollow rock; sourdough has hollows. The bakery would need several million years.
Punching holes in steamPunch presses need something solid. This one stamps neat holes in a belt of steam that keeps them.