You could hide some toys and/or chewies around for him to find in his travels as he learns his way around his new home, but I think he will just be so happy to be back with you that if you just hold him, kiss him, play with him, show him around, talk to him, and love on him while he adjusts at his own pace that he will be fine. Congrats on your move and especially on being able to bring your baby back home with you.