Fairies love gifts from humans! Some of their favorite gifts are food. They don't just like any ordinary thing from your house, though. They adore sweet things like a small piece of apple pie or a sugary drink.
Now where you should set the fairies' food is out in your yard somewhere like on a stump, or in a shadowy place. You should probably put clear wrapping around it so ants won't get into it. Another strategy is to put it on a table and leave it alone for about half an hour and hopefully the fairies will enjoy it.