During this occasion, childrens would usually go out at night to temples carrying temple. I still remember that when I'm young, I joined in the outing at night too. The only difference is that I went round the neighbourhood and my cousin house instead of temple.
In the olden days, laterns are simple. In todays' world, lantern can be seen in all sorts of shapes, even in animal shape with bulb or some traditional one, candle.
Anyway, HAPPY CELEBRATING LANTERN FESTIVALS!!!... Also HAPPY CELEBRATING MID-AUTUM FESTIVALS.
P/S: According to wikipedia, this two festival are not the same. Well, this is for you to find out....