My first LED light was this "tiny" plastic 2/3x AA clip-light that my great-uncle got me for my birthday when I was maybe 10. It was instantly one of my favorite things ever as I always loved flashlights (though didn't reach True Enlightenment until only a few years ago). It was actually awesome, I NEED to find that one of these days. Funny because I have NEVER thought of this light in like the last decade. I'm sure I still have it somewhere.....
But I put that on everyone. Went right on my cap guns for 'war games' with my brother, all kinds of time clipped (very awkwardly) to my hats during manhunt....
First real LED light was the Eagle Tac G25C2 mkII circa 2015, bought for my AR-15. Turns out I had been really missing out on flashlight tech, and that's the light that sent me down the wormhole to this here Raggie thread!