Mostly just Mag-lite's, couldn't see putting anything more than an Led upgrade into them to keep them useful, and a smattering of other light's after I found this site.
Well I had to go look I bought my Atactical back 2018 It's only been about 7 years right about the time I heard about them, because amazon quit selling the T30s I wanted to get another because I liked my 1st one so much(SIGH) which explains why I have two Kershaw Volt ss 3655 knives I was afraid...
Currently on my hip Is my Atactcal A1 NW 550 lumens, I also still have 1st light a Thru-nite T30s that still goes in my rotation It tops out at 650 lumens.
NOW THAT..is a true old timer light..however I don't think those D cells will help much, I do believe I still have 2-3 of those classic's kickin around here somewhere (sigh) now i have to go look.
As far as the ATFF(Alcohol,Tobacco,Firearms and Flashlights) Is concerned all of that was lost In a tragic boating accident 10 years ago...that's my story and I'm stickin to It.
Lost In the disaster were:
Maglite: ML150l (replaced my ML25 In the center counsel Of my car better runtime.)...
I've got a TH20,TH10 and my fist one the TH 30s this one got me hooked, however I do love my 3rd gen Mag-lites with the eco-mode that will run for days and fit in the center console of my car.
I have 3 of these lights, they'll run off a a 9v alkaline and drain every drop of juice out of them and run for days now I'm wondering how good the new ones are.
I grab my Thru-nite M TH10(headlamp) keeps my hands free with .03 firefly for 65 days 202Lm for 107 hrs for general use and additional ceiling bounce and my Maglite Ml 50L gotta love the 23Lm Eco mode for 112hrs and a nice 490Lm ceiling bounce for 15hrs If I need It.
I also have a butt load of...
Well, we are running out of Lithium I understand that's why Tesla Is putting smaller batteries in their car's when they promised they would get bigger,cheaper and go further and now there smaller,expensive and don't go as far.
There was some BOLD talk about Hydrogen fuel cells like 20years ago...
I have 5 of the 10000 mAh power banks their about the same size as my phone there really handy for keeping other things charged besides my phone and flash light battery .