The mind is the weapon, all else is accessories. (John Steinbeck said or wrote something like that; I am not quoting him exactly.) Train the mind first. One thing to beware of in UFF/MMA/BJJ training is that training to fight one's opponent in a ring will not prepare one to deal with multiple opponents on the street, so it is necessary to find instruction with the correct orientation. I would rather stay on my feet during a scuffle and find an opportunity to escape, than grapple on the pavement, but do train for being knocked to the ground, as it may happen. As for collapsible batons, unless the model in question is the EXACT SAME model as used by major police agencies, it is probably junk. I carry an ASP, one of the good, real ones, and I see it as a poor substitute for the 26-inch hardwood baton, which I also use. (Both legal due to my peace officer status in Texas, but instantly illegal the moment I retire. I will still be able to carry a handgun after retirement, but not a club. Your state/local laws may vary.) OC spray can be effective; buy the EXACT SAME STUFF used by police, in the small size, not the discount-store trash. Replace it once a year. It goes where the wind blows, so THINK before using it. It does splash and mist when it hits, so anything nearby, including the defender, will get a dose, especially if downwind. My recommendation? A small, sturdy, powerful flashlight should be part of everyone's kit when out and about, even in daylight. Ever been inside a modern building when the power failed? I have, and was suddenly the most popular guy in the room both times. My favorites are the Surefire M2 Centurion and M3 Millenium; sturdy, a little longer than the span of my palm, legal virtually everywhere, even when carried on an airplane. In a dark alley, a quick burst of 100 to 125+ lumens of light in the eyes will change the visual orientation of anyone, with no lasting injury. This is getting long; enough for now.