Similar spellings, but with a slightly different feel:
* Alys: More common in Welsh and French
* Alyce: A classic, more formal variation
* Alis: A simpler, more streamlined version
Unique, but still recognizable:
* Alise
* Alysia
* Alisia
* Aleece
* Allyssa
More creative spellings:
* Aliesha
* Alyssandra
* Aliss
Ultimately, the "best" way to spell Alice depends on your personal preference and the specific context.