To the original poster - Are your Hahn's macaw's wings clipped?
My 6.5 month old Hahn's macaw's wings are clipped and I think that in the beginning it makes it easier to train him and teach him limits and some "Dos and Don'ts", not that he "listens" to everything.
When I'm home and in the room with him, which I usually am most of the day, he plays mostly on his cage and the play gym next to it. Only on occasion does he fly (w/clipped wings) down to the floor. He mostly stays on his cage and gym unless I get him. When he's on me he does want 100% attention. I've found some toys he really likes, like a colored rings toy and a "bank" type toy with colored shapes and coins. He plays with them a lot, but still likes to chew. Not on the bed, but on either my shirt (So, yes, I wear junky shirts) or on something he shouldn't chew on (pillow case, etc.). Occupying him helps. My guy is EXTREMELY affectionate and loves to be petted and given little kisses. Lately he's even started to voluntarily lie on his back and kinda beg for tummy rubs and play. Sometimes it's a little rough, but I can tell he doesn't mean it to be.