CVS has an unadvertised deal going on this week:
Buy 3 bags of the small Frito Lay chips for $1 & get back $1 ECB.
There is a limit of $5 ECB's for this deal.
Do the above 5 times & you will have 15 free bags of chips. That's 2 weeks worth of lunch snacks! OK, so not really in my house but I'm assuming others have more will power. :)