Uh-oh, this small flashlight that you need is where your addiction begins my friend, next you’ll be like the dude who was taking x-rays of flashlights at work 
Assuming it’s only you using it (so a User interface more complicated than on/off is acceptable), and assuming you don’t need to retain dark adapted vision, we will find you a reccomendation, skip the Auto store lights. I’ve not used these myself but they look like what I imagine you need:
Nitecore Tube V2
Wuben G1
One of the BORUiT keychain lights(?)