If it's dark I have a LED flashlight that clips onto my hat. If I can't see, I'll trip and spook them anyways. I always use one in pitch black and have still seen deer when the sun comes up.
Mine is a cheap one from wal-mart. I think it's remington branded? Has worked for 5+years.
That's the best thing to do at a modern gun show. Gives you a chance to handle whatever you want without a store employee up your backside. Some fun t-shirts as well.
As long as it's a thicker, hefty blade I don't see why not...problem is, most kitchen knives have thinner blades with a super sharp but, "brittle"edge. No substitute for a good, sturdy fixed blade. And not all good blades have to be "high dollar"...that's a myth.