We have tried many different types of hanging toys
Exactly, so when you say hanging toy, there are lots of different types. Ones made from dried palm (Planet Pleasures type toys), then others made of balsa, or even strong plastic or SS toys. There are so many different toys out there that the only way to figure out what your bird likes is to slowly work through all the new ones you spot and see what takes his fancy. Remember he is still young, so it may take a while to adjust to new things, plus he may need shown how to play. If you´re finding it hard while he´s out of the cage, try sitting by the cage before letting him out. interact with him, feed him treats through the cage bars, and show him new toys and how they work.
My birds are all different, some love playing with plastic type toys (like jingly jangly ones), others love bells, others only like destructables, tohers like to preen things, one of my birds is very mechanical and likes to turn parts (and annoyingly undo the clips). My youngest hens fave toy is playing football with a plastic cat ball with a bell inside, and she prefers one type over the others (the pumpkin looking one
). It will likely take you a while to discover what your bird likes but it´s all part of the journey.
I do find that foraging activities with food included are usually always a hit. Something super simple like a foraging tray can be made in various ways, using a plate or shallow tray, line it with either crinkle paper or glass marbles, and some toy pieces, then sprinkle a pinch of seed and a pinch of pellets over the top, voila, foraging activity. You can add as much stuff to it as you like, though I find sticking to the ¨bedding¨ and the food at first makes it easier for your bird to start, and in the future add more stuff once they know the drill. I use those ikea kids picnic plates (plastic ones), and I can get them through the cage door and sit them on the cage floor inside for those times I wanna keep them entertained inside the cage.
You may find some ideas over on Enrichment and Foraging Park
of ways to include a variety of foraging activities
We even thought about finding him a partner, maybe that keeps them busy? Or maybe that doubles down the noise? LOL
That certainly IS a gamble!
Yes, it will likely keep him busy, though simultaneously it could increase the noise level.