I got this coupon in my e-mail and thought I’d share. It’s good for $5 off a $20 purchase:
http://www.walgreens.com/hotbuys/default.jsp?ec=hn579_getcoupon

Here’s the fine print:
Valid in Walgreens stores on Friday, August 22 and Saturday, August 23, only during regular store hours. Excludes alcohol, tobacco, prescriptions, prescription copays, gift cards, pre-paid cards, and items prohibited by law. Purchase amount of $20 or more must be before taxes and after coupons and discounts. Limit one coupon per customer.

There are also coupons for 39 cent Papermate pens and mechanical pencils, 39 cent erasers, a 39 cent writing tablet, and 39 cent Sharpies.

There are lots of “free after rebate” items in the Easysaver catalog this month so you could get money back. They also do refills on ink cartridges – $10 for black and $15 for color.

The weekly Walgreens deals are in this thread here:
http://melziemomsbargains.blogspot.com/2008/08/this-weeks-bargains-817-823.html

I will probably do this:
Buy 6 Skippy peanut butter – $10 (get $4 RR)
Buy Dixie paper plates (BOGO) – $3.79
Buy 2 Pert Plus – $3.79 (free after rebate on one)
Buy 3 Papermate pencils/pens – $1.17 (.39/each)
Buy 3 Sharpies – $1.17 (.39/each)
Buy 3 writing tablets – $1.17 (.39/each)
Buy 2 Bic products – spend at least $3.12 (these are “fillers”)

Use:
3 $1/2 Skippy coupons
2 $2 off Pert Plus coupons
Walgreens in ad coupons for Papermate, Sharpies, writing tablets
$1/2 Bic products
$5/20 Walgreens coupon

Spend $15, get $4 RR, $3.79 Walgreens rebate, and $5 rebate for the ‘school supplies’ from Pert
Total OOP after RR and rebates ~ $2.21!