I have a flashlight that looks like a pen in my pocket?

I have tried other flashlights. Although they don't feel as much like pens, they have buttons which are either unreliable, or will accidentally turn on while in my pocket. I've stumbled on a flashlight with a really good button - but it really feels like a pen. It's also an LED light, using AAA batteries. So it's small, and batteries last a long time.

From time to time, i crawl under my desk and have to plug stuff into my computer. I also do amateur astronomy, and it's sometimes handy to have a light in the dark.

I was thinking of it as a probability problem. You know, if i use the flashlight 10% of the time, does it make sense to have 9 pens to one flashlight? Or will that just mean that when i want the flashlight, i'll have to pay for time saved looking for pens?

This is, indeed, my most serious problem that can be attacked by simple mathematics.

If i wanted a pencil, i'd have one in my pocket. No idle threat - i used to carry pencils - most often mechanical pencils. I just don't use them much.

If i populate my work areas with pens and pencils, they migrate to less useful locations on their own. This isn't a mystery - i don't live alone. And it's also a problem at work.

The flashlight does not fit on the ear. Neither does a pen. I wear glasses. I don't always wear a shirt that has even one pocket. Pens and flashlights have to be clipped into a shirt pocket, else they fall out. Clipping them into the shirt wears out the shirt. I'm not going to wear a pocket protector. I no longer wear a calculator on my belt, though i'm quite a nerd, and proud of it.