Many Kmart locations are going to be doubling coupons again next week(starting 8/16). Definitely contact your store before going though. Kmart also has a coupon booklet available with $62 in savings.  If your store has these they will most likely be located at the customer service desk. Most of the coupons in the booklet are manufacturer coupons that can be used anywhere. Here are some items that you should be able to get if your store is doubling. They have some rules for the double coupons:
Super Double Manufacturer Coupons Up to $2.00 with purchase of $25 or more in grocery & drugstore merchandise

Participating stores only. Amount of credit from doubling a coupon cannot exceed the current retail price of a single item. No cash or in-store purchase credit will be awarded for any amount exceeding the retail price of the item. Limit 1 coupon for each item purchased. Only 1 coupon will be doubled per item. You may only purchase 4 of the same item using double coupons. Excludes Buy One, Get One offers, Kmart Savings coupons and Kmart Store coupons. Coupons do not apply to sales tax. Limit 10 coupons per customer per day. Offer excludes products prohibited by law, including but not limited to alcohol, tobacco, and prescription medication. Not valid on non-merchandise, federal or state regulated items, prior purchases, Lands’ End, Sears merchandise rung on Sears registers within Kmart and kmart.com. In the event of a return, coupon savings may be deducted from the refund. Exclusions apply. Please see store associate for details.
Sears Holdings (Kmart) reserves the right to modify or cancel this program at any time.

Grocery and drugstore items include: all food items, health & beauty, baby diapers, household cleaning supplies, pet foods, detergents, paper goods, shampoos and other beauty items, over the counter medicines such as : Tylenol, aspirin, etc.

10 coupons, per day, per customer may be doubled. Additional coupons will be honored, just not doubled. Customer should choose which 10 they would like doubled
Playtex Gloves, $1.79
Use the $1/1 coupon from 6-28 Smart Source Insert to make it Free

Ajax Dish Soap, $1.99
Use the $1/1 print coupon-zip code 85712 to make it Free.

Huggies Jumbo packs, $9.99
Use the $1.50/1 coupon print coupon or from the 8-16 Smart Source Insert to make them $6.99

Tag Body Spray, $3.99
Use the $2/1 coupon from the 8-2 P&G Insert to make it Free.

Hawaiian Tropic Suncare BOGO $7.99 – $9.49
Use the $2 off print coupon(IE) to make it Free to $0.75 each

Scrubbing Bubbles Toilet Gel $3.50
Use the $2 off print coupon to make it Free.

Hartz Dog Treats and Biscuits $3.59
Use the $2 off print coupon to make it Free.

Starbucks Single Drinks $2
Use the $1 off from 6/21 Smartsource inserts to make it Free.

SmartWater $1
Use the $1 off 2 coupon from the 6/28 Smartsource inserts to make them Free.

UPDATE-some more deals added

Pull-Ups Wipes, $1.64
Use the $2/2 print coupon to make them $0.64 each -update-they seem to be out of prints now

Ball Park Beef Franks $2.50
Use the $1/2 Ball Park Franks coupon from the 7/26 redplum inserts to make them $2 each

Betty Crocker Frosting, $1.44
Use the $0.50/1 Berry Crocker Tub Frosting coupon from the 8/9 smartsource inserts to make it $0.94

El Monterey Tornados, $2
Use the $1/1 El Monterey Tornados coupon from the 8/2 smartsource inserts to make it $1

Kellogg’s Pop-Tarts, $0.98
Use the $1/2 Pop-Tarts coupon from the 8/2 Kellogg’s/Keebler Insert or
$1/2 Pop-Tarts Blueberry Muffin and/or Chocolate Banana Split coupon from the 8/2 Kellogg’s/Keebler Insert to make it $0.48 each

Knorr Sides with Veggies, $1.25
Use the $0.60/2 Knorr Rice or Pasta Product coupon from the 8/2 redplum to make it $0.95 each

Martha White Cornbread Mix, $0.72
Use the $0.55/2 Martha White Baking Mixes coupon from the 8/9 redplum to make it $0.45 each

Pillsbury Biscuits -8-ct, $1
Use the $1/2 print coupon to make it $0.50 each

Welch’s Grape Jelly, $1.86
Use the $0.75/1 print coupon to make it $1.11

Welch’s Juice, $1.99
Use the $1/1 print coupon to make it $0.99

Yoplait Fiber One Yogurt, $2.08
Use the $1.25/1 print coupon(IE) to make it $0.83

Renu Fresh Lens Comfort trial size, $1.47
Use the $2/1 print coupon to make it Free.

ALL Laundry Detergent -40-loads, $2.50
Use the $1/1 All or Surf Laundry Detergent coupon from the 8/2 redplum to make it $1.50

Chinet Plates, $2.36
Use the $2/1 Chinet Lunch Plates coupon from the 8/9 smartsource inserts to make it $0.36

Hefty Kitchen Bags, $3.98
Use the $1/1 print coupon to make it $2.98

Lysol Neutra Air Aerosol, $2.82
Use the $1.50/1 Lysol Neutra Air Sanitizing Spray coupon from the 7/12 smartsource inserts to make it $1.32

Sally Hansen Insta-Dri Nail Color $3.50
Use the $1/1 coupon from the 8-2 Red Plum inserts or August 2009 All You Magazine to make it $2.50

Reddi-wip Whipped Light Cream 7 oz. $1.98
.50/1 from 6-21 Smart Source Inserts to make it $1.48

Crayola 24 pack washable crayons, 25¢

Elmer’s 2 Pack Washable Glue Sticks, 25¢

Elmer’s 4 oz. washable glue, 25¢

Post it Super Sticky Pads 90 sheets, $1

2 Pack Pink Erasers, $1

Crayola 10 pack washable markers, $1

Crayola 12 Pack Colored Pencils, $1

Ed Hardy Folder, Shape it Up Folder, Hot Chocolate Folder, $.97

14 LED Flashlight -$6
$6 MIR making it Free.

Irwin 20″ Hand Saw, $10 -Limit 2
$10 MIR making it Free.

16″ Tape Measure, $3 -Limit 3
$3 MIR making it Free.

Turtle Wax Wash, $3.99 -Limit 2
$3 MIR making it $.99.

Crayola Coloring Book, Cutter School Projects or Driveway Stencil$5.99 -limit 10
$5 MIR making it $.99

Lifetime Caulk$2.99-limit 12
$2 MIR making it $.99

Gildan polo shirts  $2.95

Air Wick Freshmatic or iMotion Starter Kit, $5.99
Use the $6/1 coupon from the 8-9 Smart Source Inserts to make it Free

Kashi Go Lean Crunch Cereal, $2.74
Use the $1.50/2 print coupon to make them $1.99 each

Kashi TLC Trail Mix Bars 6ct., $2.74
Use the $1/2 print coupon to make them $2.24 each

Bic Pens 10 pack., 50¢ -unadvertised sale-may vary by area
Use the $1/2 coupon from the 8-9 Smart Source Insert 
and the $1/2 Target print coupon to make them Free.

Del Monte Fruit Chillers, $2
Use the $1/1 print coupon to make them $1

Apples – $0.99/lb
Use the $1/1 Target print coupon to make them Free.

Revlon Nail Polish, $2.99
Use the $1/1 Revlon Color Cosmetic Product coupon from the 7/19 smartsource inserts and the
$1/1 Revlon Product Target Coupon from the 7/19 smartsource inserts to make them $0.99

Garnier Fructis Styling, Shampoo or Conditioner -13-oz., $2.99
Use the $1/1 Garnier Fructis Shampoo/Conditioner coupon from the 7/12 redplum inserts or the
$1/1 Garnier Fructis Style Product coupon from the 7/12 redplum inserts to make it $1.99