11 literary devices that match the description:
1. Simile (comparison of flowers to a crowd)
2. Personification (daffodils are described as fluttering and dancing)
3. Alliteration (repetition of the /f/ sound in "fluttering and dancing")
4. Imagery (visual description of the golden daffodils)
5. Symbolism (daffodils symbolizing happiness and joy)
6. Rhyme (couplet rhyme scheme in the last two lines)
7. Metaphor (comparison of daffodils to a crowd)
8. Hyperbole (exaggeration of the number of daffodils seen)
9. Onomatopoeia (word "fluttering" mimics the sound of the daffodils moving)
10. Assonance (repetition of the long /o/ sound in "o'er vales and hills")
11. Enjambment (sentence continues without a pause from line 3 to line 4)