You could take one of the many diminutive fey (Sprites, Atomie, etc.) and slap a few weak spells on them. Alternatively, the Lyrakien Azata- although tiny- has some good fairy-style abilities, in addition to healing and some bright light-sparkle powers. You could just shrink it down to being diminutive, instead.
I’ve used wysps as LoZ fairies. Specifically the ones where they are balls of light. I think I stick the Young template on them to make them the right size, then have the normal wysp be the large easter egg version.
This feat, Sage’s Guidance, is basically Z-targeting, though they have to be a Sage Familiar for you to use it.