One of my biggest energy wasters is finding and having to deal with miscellaneous school or craft supplies lying around with no one to claim them except the mysterious "child" I seem to have inherited...a little tot named "Not Me." I've never personally met this child, but he leaves quite a mess in his wake.
A few years ago, I decided that color-coding each child's school/art supplies would ensure its "ownership" if it suddenly went missing or was out of place.
So, at the beginning of each school year, I outfit each child with supplies in the color of his/her choice... everything from scissors to notebooks to pencils and erasers. Now when something is left lying around, I know exactly whose it is and who needs to be encouraged to put it back in place.
In addition, I never have to label notebooks or folders. Although I know that my KIDS would recognize their own personal belongings no matter what the color or design, I'll admit that I never would. Now I can just open the school cupboard and instantly pull out the exact item that I need without looking for a name or distinguishing picture.
This color-coding worked so well, that I now apply this same principle to other items throughout the house...toothbrushes, dishes (The kids use a kid-friendly set from IKEA that contains all the basic colors.), laundering items, etc.