My son is a tinkerer and creator. He is still somewhat young and has expressed on multiple occasions that he dreams of building his own phones. Enter the CircuitMess Ringo. It is an educational DIY kit to build a mobile phone (that uses actual SIM cards). As soon as I saw this, I knew it was perfect for him and on Christmas morning, he was ecstatic when realizing what this was. Anyway, I will be guiding and assisting him with his project very soon and may share more details as we progress through it.