I simply don’t carry that much stuff. I have…but not so much these days. Fewer choices = fewer decisions = quicker reactions
A look at the facts and stats as well as random individual incidents (ASP on YT, Tom Givens stats, etc) tells me that a backup gun or spare magazine is extremely unlikely to be needed (in the context of a private citizen carrying concealed). I can’t even really find an example of it. If anybody has one, please share, I’m sure it’s out there. So I just carry the one gun
Another look at facts and stats will show that assaults/attacks which do not reach the level of lethal force far outnumber those that do, so I believe a tool applicable to a non-lethal-force situation is important. To me, more important than a spare mag or BUG, so I carry pepper spray (POM currently, its size is just-right and I like flip tops)
I also rank first aid above a spare mag/BUG. We carry firearms and other tools in case of a deadly force incident, and there are also motor vehicle accidents and just “life happens” injuries, so I try to carry an Israeli Bandage or Emergency Trauma Dressing at minimum but optimally the smallest TCCC approved TQ (SOFT-T currently).
And that’s the end of my kind-of must-have list, besides the usual cell phone and wallet of course.
I do almost always carry a pocket knife, but I don’t consider it a defensive tool, for me. I don’t have any professional training in using a knife, for me anywhere I can carry a knife I can carry a gun, and both are lethal force so for lethal force it’s gun all the way. And the knife requires being within arms reach, pepper spray and gun do not. I carry a knife because I like knives and I always end up finding a box to open.
And a flashlight. Flashlight tech as made lightspeed progress the last 10-20 years so these are many more options now than there used to be. I have a little one (still hundreds of lumens) on my keychain and usually have a more ‘tactical’ type light in my pocket.
Gun on the belt. Pepper spray and flashlight support side front pocket. Keys and pocket knife strong side front pocket. Phone support side cargo pocket. Wallet and TQ strong side cargo pocket.
All of my pants and short have cargo pockets. Doesnt’ have to be tactical pants, even Duluth Trading Company work pants have cargo pockets. I do love VERTX pants and shorts though, and also Kuhl shorts.