IOS Toggle CSS
Not sure if this counts as freebie, but you just have to take a look at it. It’s pretty.
IOS Toggle CSS is a free Coded design resource made by Dribbble user Daniel Eden. As far as I can tell, its license is Unknown.
Helpful hint: Dribbble users are nice. If the license is unknown, it is usually because they forgot to mention it explicitly; not because they were being stingy. Ask nicely and they will probably allow you to use it.