This is a handy little idea that can transform a problem shoot into a creative solution. Think about three of four of these placed at strategic locations… cool.

Strobist: Free and So Easy: DIY Grid Spots for Your Flash: “It sat on my list of (about 20,000) things to do until I saw a piece of thick, corrugated cardboard yesterday. Making these little grid spots really could not be easier. (Heck, the top picture pretty much explains it.) And can be done with things you are likely to already have around the house.”