Toyota Pickup, no crank, no start

My 1985 Toyota Pickup is having no crank, no start. The fuses are all good, battery is fully charged, and the cables have no fraying or corrosion that I can see. At first, I was able to turn on the accessories still, but now the accessories don't turn on when I turn the key either. There's absolutely no sound whatsoever. I've been told "Battery cables, alternator, starter and ignition switch". I don't have the equipment to test the alternator, and right now I'm just trying to get a good idea of what it might be. I personally think it's the ignition switch, but I'm told plenty of other things. Any ideas? Thanks in advance.