That wasn't just joy those toys brought him as a child, it was security, and he needs to resolve what drove him toward them. No maladaptive mechanism in use today is going to fill that hole from childhood.
His toys as a child were anchors in an unstable life-situation and he's re-anchoring by using them.
He's an adult now, and needs to seek counseling to resolve early child instability and embrace the adult understanding that we don't have the control we think we need.