Instant Wins Part One

Newport
The cigarette brands have contests pretty often. Sometimes you have to give them a lot of age proof like a driver's license number or uploading a pic of your license. If you're not comfortable doing that, just skip that brand. Some states no longer allow you to enter contests sponsored by a tobacco company, so be sure to check rules for eligibility.
Newport seems to have constantly running instant win, daily entry sweeps that change every few months. Here are their current ones:
Payday Pick 3
Ends Sept. 24th
Win cash, gift cards, etc.
Summer of Pleasure
Ends Sept. 24th
This one has daily prizes, weekly prizes and a grand prize. Check the landing page after you enter for some free downloadable content.
You can enter either of these by clicking "Promotions" once you log into your Newport account.
Newport

Beringer Main & Vine Wine
This one lasts until the end of December. You can use code ZY9XCBSP to spin the wheel once a day. You could win things like a patio set, concert tickets, earrings, candles or a keychain to name a few.
Beringer

Acqua Panna
You could win the grand prize of a trip to Italy or one of the daily prizes like a tote bag or travel charger. This one ends August, 31st.
Acqua Panna

Red Stripe Shoreline
Definitely read the eligibility rules for any beer sweepstakes. This one is not open to residents of NJ or TX, but they always vary and oftentimes a company will run multiple sweepstakes, which one you enter will depend on your state. There are various instant, monthly and regional prizes to be won here for things like coolers, bottle openers and wallets. The site can be a little slow, so if you don't see a van to click on right away give it a few seconds.
Ends at the end of September
Red Stripe Shoreline

Main & Vine
Another one from Main & Vine. This one is BBQ themed with prizes like grills and BBQ sets. Enter once a day until August 31st.
Main & Vine BBQ

Smithfield
Find an instant win contest that ends on September 4th in the middle of this page. Most contests let you enter for a new day right after midnight. This is one that is 24 hour entry, where they make you wait the full 24 hours before you can enter again. Some of the prizes you can win are a cowboy hat, thermometer and Walmart giftcard.
Smithfield Get Grilling

Nabisco
You will be entering for a grand prize and also trying for an instant prize of a Nabisco or movie themed gift. Don't worry about the pop up that says it works better on a mobile device. Get your entries in before September 5th.
Nabisco

Winston Country Roads
Another cigarette one, so a few states aren't eligible, check the rules. This one ends July 31st. Each day you're entering for a chance to win an instant prize (they list several possibilities but I've only ever seen TV wins from here) or earning tickets toward the grand prize. You'll play a game where you choose the best option and either get an entry or it's a bad move and the game ends. It seems like you always get an entry on the first question, no matter what you choose, and the others are just random.
Winston

Mariner Finance Winning Inning
You must live in one of the following states for this one: Alabama, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia or Wisconsin. You are guessing which inning the Mariner Finance logo will be displayed behind home plate. It's daily entry, so I just change my guess each day. The contest runs throughout the baseball season, ending in September. There is a monthly prize of a $25 Amazon gift card and a grand prize of a $500 gift card.
Mariner Finance

Better Homes & Gardens
I love these kinds of sweepstakes where the prize changes each day! I am not sure when this ends because the rules change every day - each day is considered a standalone sweep. You can see the upcoming prizes below that day's picture, but I never look, I like to be surprised ;) Be sure to choose a video to watch and enter the phrase you see afterwards, otherwise your entry won't count.
Better Homes & Gardens

Kool Ultimate Escape
Ends August 15th. Each day you get three chances to earn entries in the grand prize or to win an instant prize like a giftcard, luggage or tablet. It's a tobacco company, check your eligibility before entering.
Kool

Little Tikes & Sun-Maid Play-Stakes
Enter by July 31st for a chance to win a Cozy Coupe or grocery gift card.
Little Tikes & Sun-Maid