* ay - like in "say"
* ey - like in "they"
* ee - like in "see"
It's important to remember that these are not perfect rhymes, but they do share a similar sound.
You could also consider using near rhymes or slant rhymes, where the sounds are similar but not identical.
For example:
* day
* way
* grey
Ultimately, the best rhyming word for "ae" will depend on the context of your poem or song.