They are really tiny lamps. They don't get hot at all. Warm, yes. Hot, no. I can hold them in my hand just fine.
I like LEDs a LOT, trust me! I did auto headlight mods for a few years before getting back into gaming and I still have a TON of LED rope, auto bulbs, and raws sitting around. I use 'em whenever I can. I just can't stand teh color temperature of most white LEDs. Usually they're in the 5000K+ range and I'd really prefer something 3500-4300.
Sounds like your'e trying to grow pot in your closet lmao. JK you need HPS lights for that.
I keep all my game stuff in a closet that has no light so I have thought about doing this also. I don't want lights too bright though.
Bright light will fade the color of paper as if you left it in the sun. It's not like damage will happen overnight but if you're a collector that plans to have the games for a long time it's something to consider.
I have seen comic book damage from sun and UV light before.
I know most people here aren't that OCD like the VGA collectors but I myself even have a few games that I try to treat as best possible.
Just like comic books and other collecibles the best way to store them is in a dark place where the temperature and humidity are controlled.