Easy ways to carry weapons?

im writing a book and i want to know easy ways to carry weapons like rifles, pistols, swords, knives etc.i dont really know anything except for knife sheaths and gun holsters and the knife sternum harness thing that goes around your neck and under your armpit. u can explain it or give websites. also if anyone knows of any kind of stretchy clothing that is easy to fight in (like what they use in movies and stuff) that would be helpful too thanks