11) A waterfall for the garden
A fun project for with the kids!
12) Paint around your door knob without getting any paint on it!

No need to remove the door knob, or struggle with tape. Simple scrunch foil on top to protect it from paint!
13) A homemade photography reflector

14) An anti-static ball

Place an aluminum ball into your washing machine with your clothes to remove static electricity. Be aware that in addition to being super efficient, the aluminum ball is reusable!
15) Add some light to your seedlings

Cover a box in foil to reflect the light further to your little plant seedlings.