“Because the users range from kids to non-hobbyists I want to keep things very simple, reliable,…….”
I have a BUNCH of these throughout the house (basically in every room) and elsewhere. As simple and practical (i.e., I don’t care $$$-wise if you sumhow destroy it) for wide-user range applications as it prolly can reasonably get. Uber-lightweight, essentially water proof, tuff/well-made, uber easy to operate, and one of the most important features, it’s also a 360 degree LANTERN.
Each comes with 3x AA batts and runs for a LONGTIME. On sale @ Costco I’ve seen them fer as low as $9.97 for the THREE PAK. Mind you including NINE Duracell AA batts. Even at $18 STILL a GOOD DEAL.
Since each light carries three AA batts, in a pinch you also have an emergency supply of AA’s on hand should you for wattever reason need just a single AA to operate another type light. IMNSHO stick with AA platforms. AA’s are the most common batt size in Muggleland.
About as foolproof and muggle-proof as you can get.
And they do exactly watt they advertise they’ll do. IMNSHO if there ever was an ideal “emergency light” that every BLFer should have on hand for doling out to non-hobbyists during SHTF events THIS IS IT.

https://www.costco.com/Life-Gear-100-Lumen-AR-Tech-Flashlight-with-Area-Lantern%2C-3-pack.product.100415035.html
And yes they’ll also run on 1.2v NiMH rechargeables too.
I also bought these becuz 9volt batts are prevalent. These run seemingly forever. Dorcy had a BOGO recently that worked out to $1.50 INCLUDING the batt. IMNSHO every emergency SHTF kit should have at least one of these.
https://www.amazon.com/s?k=9v+flashlight+snap+on&crid=KM3TI4X41PD8&sprefix=9v+fl%2Caps%2C279&ref=nb_sb_ss_i_3_5
And yes they’ll also run on 9v NiMH rechargeables too.
PS. I almost feel like this is sum kind of FEMA public service announcement or sumthing.

PSS. Ignore anyone’s comment about them being ‘flimsy’. They’re not. They’re WELL MADE.
PSSS. On the Costco Life-Gear light, there’s about 1 1/4” diameter folding steel ring at the tail end. Uber handy for hanging it in tents, off tree branches, fence tops, general protrusions, well you get the picture. And btw, you would normally presume that at this price point this
1 1/4” ring snaps down into closed position flush ring would be carbon steel, right? Nope. It’s STAINLESS STEEL. As are the two contact anodes that allow it to turn on automatically if thrown into the water. So no exposed metal that easily rusts. 
PSSSS. That clear plastic surrounding the lantern LEDs? Well that clear housing just bayonets off in a quick twist. No threads to get crossed-up. It’s also O-Ringed. AND there’s enough room INSIDE of that lantern clear housing to DRYLY STORE STUFF. Ya know, matches, paper munny, coins, para cord, string saw, even for a single AAA batt PLUS sum maybe even all the foregoing. Use yer ingenuity.
And I actually like it that it’s NOT dinky. Not so easy to lose for even a 7 year old and so light that grandma can throw it at a zombie with velocity.

PSSSSS. Oh……and, it has a bezel ring that unscrews from the main black switch housing. This bezel ring self-contains and retains the reflector itself. The reflector won’t fall out on the ground IOW. It also is O-ringed protected on the main black side switch housing.
So when ya unscrew (there is about 1/2” width’s worth of coarse threads to securely werk with) this bezel/reflector portion, inside of that back switch housing there’s ALSO room to hiddenly store stuff, especially paper munny, and the bendable like. This main switch housing also has two lanyard holes where the bezel part meets it btw.
“WAIT! THERE’S MORE!”………
After unscrewing off the bezel/reflector ya now have yerself A MULE! Tat’s right. A nice even big soft circle of light either standing from the flat tail end or hanging from the tail ring off yer 18K gold Mr. T chains. 
It’s a durable-enuff, uber inexpensive, muggly-purposed , elegantly-simple, well-made, easily disassembled/assembled, overall brilliant design.
Great job Life-Gear!

PSSSSSS. Here I am PSSSSSSSing my life away again.