One of the things too long on my to-do list was some nicer night-lightning to my home and leds would be the perfect solution for that. They’re cheap and practically last forever. Like usually, I couldn’t find anything that would fit my purpose from stores, so I decided to make the led-strips myself. It’s made from triangle shaped wooden strip. Drilled the holes (by hand at this point, which is very visible :P), milled a groove for wiring in the back side and soldered the leds in place. Leds are 5mm, white, driven with constant current of up to 50mA. Lightning output was around 15000 mcd @ 20mA. Not very much in lumens, but it is enough for this sort of purpose.
And first installation of strips fitted in place, this is how it looks now in stairs. Photo is actually quite dark compared to what it is in reality. There’s well enough light now to see where you put your foot on.