Support for working with orphans

Hi, I wasn't sure of the title of this post.

I am looking to do a coding day with some of my colleagues for kids in orphanages. Salesforce have some predefined curriculum for this but does anyone have any experience with doing this with Arduino? Do they provide free boards for this kind of thing or have some training material?

It would be great to hear from anyone around Central Europe as well who might be interested in helping us.