Child's Imagination Throne

I wanted to build something whimsical with my son, something different.  Since he is all about wood and trees right now (setting aside his enjoyment of watch them fall down) and his current favorite book is about a Frog King I went with a throne.  I was hoping to give the impression that is is made from a splintered tree stump and for it to have a 'secret' spot to hide one's treasure.  It was a great project, let me use a board I was struggling to find a use for and my son loves the result.  I want to teach him about service to others so since the start of this I have been talking about how we are going to donate it to the library's child reading room to inspire the imagination of others.  I am not sure how much a 3 year old can understand giving but I did hear him tell another child in kiddy gibberish about the "image-nation chair at the libery" so I think he has some of the concept down.