....Yes, if you show LED's to a 5 year old they will never let you go... and if you show that they light up when connected to a battery...you will spend the rest of the day watching batteries getting drained.... If besides all this you have a spare project box in hand the litle ones will find a way of re purposing it!
That's what happened when I showed LED's (she discovered then in fact) to my little child, after playing a bit with the LED's she asked me for a night light, she never had one but she knewed what it was... here's the result:
Her design for the LED placement:
And switching bettwen the J of Joana:
And the heart:
... she was also fun of the breadboard....and yellow wires!
I suggested blinking and doing circles using an Arduino but no, it was OK like this...an Arduino was spared!
Have a nice week!
P.S. Now I have to connect to an external supply as requested/ordered!...