Near Rhymes:
* Media (obvious but works in some cases)
* Idea
* Deja (as in déjà vu)
* Trivia
* Aria (if using a musical context)
* India (if using a geographical context)
Eye Rhymes:
* Alleluia (sounds similar but doesn't actually rhyme)
* Julia (same as above)
Internal Rhymes:
* You could use words with the "mul" sound within them like "multitude" or "multi-faceted" to create an internal rhyme within a line.
Ultimately, the best rhyme will depend on your specific needs and the context of your writing.