My birthday cake is cooling so that it may be frosted, so I bring you a gift for my dear @werpiper who requested Dwarves in Erebor discovering a normal not-mirkwood-sized spider.
Ori screamed when he found the tiny huntress, scrambling away from her. She was small, perhaps a quarter the size of a dwarf's palm, but of course she looked much like the larger ones who'd taken them all in the dizzying dusk of the Elf's forest realm.
She was far more beautiful than them, though. Her head and her fuzzy legs were marked with bands of black and white. She was a proud little warrior, having lived her whole life in the shadowed corners of the dragon's taken mountain.
There were no dragons here, now, and there would be fewer bugs for her to eat in the library records, now that the place would be cleaned and cared for under Ori's care.
"Come, come pretty huntress," Bifur urged, gently coaxing her into his hand. Ori made a distressed noise, but Bifur smiled at him as the huntress settled on his palm. Bifur carefully closed his other hand on top, to cage her just temporarily.
He knew just the place to set her free, where she would frighten no one and do her part to keep Erebor free of pests.