I like the Rovyvon clone option but it’s pretty tiny , has a hard to find button and will come on in high or god knows what at times .
I’m tempted to say AAA old school
Lumintop tool since I’ve used them everyday for 10 + years and like the med / low high driver… and holding back from just saying why not buy a TS 10 17$ and has a battery included that like you say will last forever . What’s not to love? Two years running its BLF members favorite light? Everything else seems like a dumb suggestion . I liked the Convoy t3,4,5 reccomrndation but next to the ts 10?
Those are probably not a bad idea, they’ll be good enough for what the OP wants and they’re cheap.