WoW!! Ebates offers 6% cash back on all purchases @ Lowe's!! (can do in combination with other coupons!!!) And get $5 just to sign up!!
Here is how you do it:
Go Here and sign up for Ebates
Watch your $5 go into your account immediately
Then type Lowe's in the search bar
click the "shop now" button for Lowe's
Shop and purchase products
Then watch your money account grow :)