The 6'' by 5.25'' Green Lantern Rub On Sticker will act as a foci for will-based constructs. Well, you may need to concentrate a bit more than normal but I think it might still help. It is all in your head anyways! The Green Lantern Rub On Sticker is your standard issue green symbol of the Green Lantern Corps and you can put this on books, refrigerators, Power Batteries, Sentient Planets, or other things that normally get stickers. I'm sure you can use your imagination!