I have been collecting Kaweco Sport Fountain Pens from the early days of my fountain pen collecting days. I have way more of these tiny little plastic pens than any one human needs. I have gotten better about NOT buying every single colorway option that hits the market but sometimes I get really tempted (last year was the Limited Edition Hello Kitty edition) but this year, I fell for the DIY Glow-in-the-Dark model.
However, the only way to get a Glow-in-the-Dark Kaweco Sport you must attend one of the DIY events which are held in-store only. So… you need to live in a community that has a pen shop large enough to support an event like that or have a friend who lives in the community. Which is what happened for me. (Thanks, friend!)
Flax Pen to Paper hosted the Kaweco DIY event a couple weeks ago and my friend kindly trekked over and was able to grab two of these delightful little pens.

I keep giving props to Kaweco for continuing to experiment with materials in their signature products. The iridescent models, the translucent glitter models, and now a Glow-in-the-Dark model.
So… does it glow-in-the-dark?

Yes it does! (Apologies for the slightly blurry photo, it was a long exposure). And the next question is WHY would you need a glow-in-the-dark pen? Ever hunted in the bottom of your bag for your pen? Ta da! My number one reason for glow-in-the-dark model.
I appreciate the ability to find a pen in low light — lost in the cushions of the sofa, the bottom of my bag, on my bedside table, etc.– which is what makes the Glow-in-the-Dark Kaweco special to me.

I paired the glow-in-the-dark DIY Sport with Sailor Manyo Ayame which has a little bit of a glowy vibe with its multichromatic reddish purple-to-green which is a weird color match but I kind of like it.

Do I have too many Kaweco Sports in the same color scheme? Maybe. Do I still want the new Lunar colors? Yep. Thankfully, they are cheaper than my other pen weakness, Sailor Pro Gear Slims.
Do you have a pen you tend to collect because of the colors? Are you able to resist them? Which one made you buy another one?

TWSBI Ecos are my drug of choice in making sure I have all of them. I have been collecting the rarer ones for a couple of years. I have them all except Golden Horse, and Sunset. So yes I know the feeling. But I have to say it’s fun trying to find and buy them, especially from the 2nd hand market.
In general, I like having different pens rather than different colorways. I have two Safaris but no urge to buy any others. That said, if money was no object, I’d get another Edison Beaumont or two.
I got into the habit of putting an ink color that matches my pen which led to a need to have all sorts of colors of pens to match my ink. Dumb? Probably. But fun!
Now you’re making me regret standing strong against temptation, Ana! Argh! My favorite Sport colorway has to be Fox. Nib: has to be B or BB. The BB quickly became a favorite. Now I’m going to have to investigate your comment about lunar colors ….
Sorry to inspire FOMO but you’re welcome too! 😉
Need.
The first fountain pen I ever bought myself was a Kaweco, back when they were “Ice” Sports. I still have a full color set of those. (I will be buried with my orange Ice Sport).
I don’t get every special edition. But now I need a glow-in-the-dark Sport. The Lunar sports were already on my wishlist. M, B, or preferably BB for me. But given the length of time I’ve been specifically collecting Sports, I have at least one of everything from EF-BB, with a few calligraphy nibs and at least one neon green/yellow highlighter.
I definitely miss buying them for $15.
So many things are more expensive. I still think the Kaweco Sport is a value compared with other pens. But yeah, the prices are just getting exponentially higher for everything.