This past weekend I spotted a flashlight at Home Depot, with the "Husky' brand. Interesting elements as far as I'm concerned, it's sold as a rechargable battery flashlight, comes with a single AA or AAA adapter, not one of the 3 battery cylinders) and has a USB-C charging port on the side. The flashlight also comes with a USB-C to USB-C charging cable (short under a foot or 300 mm. and a USB A to USBc adapter for those who only have chargers with USB-A slots. There is a small metal pocket clip that can be fitted to the barrel either with the clip facing the back, or the front. I don't recommend using that as a belt clip, but if you want to , I won't stop you. The flashlight head rotates to adjust focus, and has 4 brightness modes, and a blinking mode. It does not appear to have an SOS function as far as I've tested it. When the light is on, the switch has a green led glow around it on the but of the flashlight. I can't say that at $17 or so that it's a good deal, but I bought it for me.
Not being satisfied with the clip that came with it, and not really wanting to have it ride in my Jeans pocket, and already on several occasions holding flashlights like this in my mouth, I decided that I wanted to design a belt clip that can be worn to hold the flashlight either vertically or horizontally on a belt. In the horizontal mode, it can be used to illuminate where you are walking if you need to keep your hands occupied for some reason.
In the image you see a corner knocked off. This is intended to be the bed surface to print on. Doing that means that filament will be flowing around all of the curved surfaces of the clip as far as where it will be clipped onto a belt. If printed this way, you should not have a situation where the clip breaks easily while it is on your belt.
Feel free to remix it for other flashlights if you would like. The two measurements that are 'important' on this one are the cylinder diameter of 24.5 mm and the flats separation of 22.5 mm. I used the cut angles to hopefully properly seat the flats, within the clip, and keep the flashlight from easily sliding up or down within the holder.
As noted the bed surface should be the 45 degree cut across the corner of the two bends. You will need support. I use Tree support, but printed this way the only parts that really need support are the flashlight clip ring. I printed in PLA, Black, that I got from Tangled. I don't have a problem with people using any other material though, Tough PLA from Inland (I know it's rebranded from some Chinese manufacturer) PETG, and ABS or ASA all seem like reasonable options. CF or glass fiber fill may result in too stiff to comfortably get the flashlight into the clip, or be able to remove it, but I don't know that for sure, if it's an option for you, and you want to try it, you have my blessing. This should also printe well in most SLA and MSLA resin options, however you may want to use an ABS-Like, or "tough" cure material, and I'll leave it to others to work out the best orientation for printing this on those systems. I would think again using the 45 degree corner cut as the attachment point should give you good working adhesion, but you may find it works better in other orientations. It's not something I've tried with this yet.
I have in mind to print it in a high-vis filament. Perhaps at some point I'll find a flashlight that glows at a light level whenever it's not on, and has a 1 month, or longer idle time, but this isn't that. So High Viz, or even the Neon Green I've picked out for it, later.