Field guide No. 362
Fire extinguisher of falling leaves
Puts out summer.
In an overgrown glasshouse, a red fire extinguisher lies on the wet floor blasting a plume of orange and red autumn leaves instead of foam. Nothing was on fire.
Field noteExtinguishers hold foam or powder. Leaves are a refill for a different season.
Also possible, also breaking category
Emerald frog’s concentric dew chorusCalls are sound; dew is water. A croak arriving as droplets swaps one for the other.
Attached to this placeBent steel spans canals daily. Bending it into office supplies is a design choice.
The spool viaductRope bridges are thread, slightly more of it. The spool supplies the rest.
Shopping cart on snail wheelsSnails as castors is a design choice, a poor one. Nothing about it contradicts itself.