For haunt-work?
This last Fall I bought some small, yellow plastic flashlights sold by the Bayco Co. out of Texas.
Menards had them, but now they don't? I really am impressed by the light they make and how long the batteries can last , how light and small they are (they come in numerous sizes) but what I Really like about them is you don't have to wear out the micro switch to turn them off and on all night long.
The lense is in an oval small opening that is thumb--sized, I just put my thumb over it as I wrap my fingers around the rest of it and it is "Lights OUT!"
If I have it turned off and I am going to sudddenly light up things in conjunction with the scare I press the switch down, hold it there, then slide my fingernail off the switch and it's on very quickly, smoothly, quietly.