Sorry, I'm not great with words.
This might explain it better:
http://learningparrots.com/blog/trainin ... l-parrots/
He doesn't need to stay still, just ensure he's not getting near the panic point. The first video I shared of Squidgette was in the morning while she is running around her cage, no matter whether I am in the room or not. You can see her pause to think about the apple before deciding to come and grab it.
As soon as she realised I was listening to her and backing off when she felt frightened, she started looking at me in a different light. She just seemed to realise I was a rational being one day and suddenly everything got easy.
Can you give him some safe branches with leaves to shred in his cage for entertainment? I find my birds play with them more than bought toys.
As far as the play stand, aero will probably want to be nice and high at first. If you have some nice curtain rails he can hang out on, he probably won't mind the lack of playstand.
I will let someone else answer the returning to the cage question, I have never tried with a bird that doesn't step up or respond quickly to bribes.
All I have to say is: Make Sure you Don't need to go out Later That Day! Trying to get a parrot to do something when you have a deadline never works for me! Even Nila has made me late for work a couple times when he was younger. And Squidgette foiled the plan I had of going to look at a potential parrot club meeting room with Ellie last week!
Have you tried putting bird safe branches with leaves in his cage? both our birds like shredding them and stripping bark more than they like bought toys.