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These tin can lanterns would be fun and pretty for summer nights outside, either eating or visiting. You could make them useful by using citronella candles to keep the mosquito away, I suppose - assuming those things actually work. (I've never tried them.)
This site offer very simple instructions. Pay attention to the instructions about filling them with water and freezing them as this would help to keep the cans in shape. :-)
DIY Tin Can Lanterns at DIY & Craft Ideas
"This little light of mine, I'm going to let it shine...
Let it shine till Jesus comes, I'm going to let it shine."