Mark's mailing from EL wire, tiny microscope, and a black light flashlight is a subscription service for wonderful things. People can subscribe to a curator (such as Joel Johnson, Veronica Belmont, Tim Ferriss, Joshua Foer, Gretchen Rubin and others) and pay $25 per quarter to receive a box of items selected by the curator.

I'm a curator and my most recent mailing includes things to stimulate your sense of vision: a length of EL wire, a tiny microscope, and a black light flashlight. Take a look at what people are saying about my latest mailing on Twitter.

Mark's Quarterly subscription


Quarterly Co. interviews Mark

Sneak peek at my package of Fantastic Plastic gadgets and novelties



  1. Blacklights are a great way to burn out the eyes of people who don’t realize that they are much brighter than they look, and that the retinal damage from UV light doesn’t cause any pain.

      1. I got the package and like it, but the warning label isn’t very big, and I did look directly into the light before I noticed the warning and became aware that it was a UV flashlight. I haven’t noticed any difference in my vision; I didn’t look directly into the lights for very long. But I’d say the warning was too small to be effective for someone who didn’t suspect the flashlight was anything other than a regular flashlight.

        Note: I had to put batteries in it before turning it on and I still didn’t notice the warning. Like many people probably do, I looked through all the stuff before opening the envelope with the  letter from Mark in it, so putting a warning in there wouldn’t have been an effective warning for me.

        — Donald King

        PS: The UV flashlight is very cool and after I saw it was a UV light I went around the house looking at everything using the UV light.

  2. I have that microscope, it’s in my hiking bag… got to see a tiny butterfly larva up close: worth it.

  3. EL tubing is relatively cheap on eBay, and useful for giving one’s bicycle that extra bit of visibility.  (The folks who sell it purposefully for bicycles mark up the price by 400%, of course.)

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