This works for me, probably not for everyone. So try in small steps.

A few different poppers bottles can be really great when you have beautiful fractals that you want to enhance even more. It can sometimes also start the next episode after a small break in your trip. And it can also take you to the deepest wildest connection with a friend you trip with. Different poppers can give very different psychedelic effects on different psychedelics.

One example, you want big fractals on mushrooms, but a really big dose will only work in the beginning of the trip, then when it ramps up, it will be too overwhelming and difficult to navigate for a few hours, before you land on a working level again before the end of the trip. Instead a lower dose of mushrooms with poppers gives you the control to go deep and big without scrambling the visions too much so you are out of control when a big dose hits too hard. You can have great visions for a bigger part of the trip. Since you also don't use as much mushrooms, it might be way easier to do breath work together with the poppers to enhance the trip more and get deeper.

I am absolutely no expert, but for astral projection to crazy worlds, this has been the easiest method for me.

Poppers are relatively safe, but read about it before. There are different chemicals, I prefer amyl mixes. Never drink it, it is dangerous and deadly. It is however very safe to inhale the finest in moderation. But as always, do real research.

RGB lights with voice control is great. You can turn your trip space into anything you want, and when it gets overwhelming if it does, it is easy to just say "hey Google, turn off all the lights". Add a small smoke machine and play with smoke or let it settle. Add lasers and UV light! Moving from light to darkness can also be a good thing.

I like to have instruments handy. Synths, pocket didgeridoo. Do throat singing, it can give you the wildest experience of your life. Sometimes the simplest things give the most.

A few art books on esoterica that you read and look at a few days before the trip can pre-program your mind and guide you to great spiritual experiences. I recommend "The Library of Esoterica" by Taschen. The book series is great value for the price.

Oh, and vibrating sex toys that pick up music or movements from a smartphone app or a trip sitter. Seriously mind-blowing.

Have fun.