What should one do with an Easter egg that was given as a gift?

I have a question about easter eggs. I know it's obviously haram to sell and buy them. But today a neighbour has left in front of the door of my hause an easter chocolate egg, although she well knows that my mom and I are Muslim since 3 years, alHamdulillah.

Now I don't know what to do with this chocolate egg. I think it's also haram to eat easter eggs as it's haram to buy them. So what should I do? Do I have to throw away the egg (naturally destroying it so nobody can eat it) or can I break the chocolate into many pieces to consume it during the year as "normal" chocolate?