A spooky tautogram:
She saw something.
Some small, slithering something
Sang soft serenades.
Surrounding sounds: snuffling, snorting.
Someone slides stealthily.
She’s somewhere spooky,
A tautogram (Greek: taut=same, gram=letter) is a poem where all the words begin with the same letter, though not necessarily the same sound. They should be both grammatical and sensical.