Hello Rick and welcome to our family, so glad you could join us and we look forward to hearing more about you and Jack, wow we have several new Jacks.
Its not uncommon for a grey to pick a favorite person and that person is the one who can handle it without any problem and my Josey is the same way, she will give my hubby kisses but that is about the extent of her interaction with him.
Some greys prefer one type of toy over another and you will just have yo observe Jack to see what type he prefers but do look around the toys and playstands room for lots of ideas to make toys from common items found around the house and other suggestions. We all know how expensive toys are to buy ready made and be sure to browse the baby aisle for items suitable for greys to play with.
I found out that the vacuum cleaner makes some birds want to bathe but it doesn't bother my grey but it does my conure, she will jump right in her water bowl and get herself wet. I like the idea of a big bowl like some type of ceramic or heavy stonewear that you can find in the dog section of the pet store, they are big enough for a grey to get in and won't tip over.
Sorry to say but some greys are classified as closet talkers, they won't talk in front of anyone and there is not much you can do to make him talk in your presence, maybe as he gets older he will relax that some but don't count on it.
Thanks for sharing the pictures of Jack, he is a handsome fella.