National Coffee Day is Wednesday, September 29. Many retailers are participating in the festivities this year, so no matter where you buy your coffee, you can save.

National Coffee Day, which began in Japan in 1983, celebrates the coffee bean we all love and also promotes fair trade and, more recently, sustainable farming practices. If you missed this week's event, International Coffee Day will be held on October 1.

It's not just about getting free coffee. With sweepstakes, membership rewards, new drinks, and more, coffee shops are going all out to celebrate this year. Some of the biggest promotions include.

Starbucks is offering free coffee to anyone who brings their own reusable cup into the store on Wednesday. However, given that it is the brand's 50th anniversary, there are even more offers this year. At Home Starbucks can also sign up for a free pack of Pike Place Roast (Starbucks' signature medium roast). Even better news if you have the best coffee maker on hand.

Panera honors parents and caregivers with a Coffee Day celebration.

Dunkin' Donuts is offering National Coffee Day deals to its members. Membership is completely free, and those who participate get a free cup of coffee with any purchase on Wednesday.

7-Eleven will send home a free coffee with the purchase of any baked good on Wednesday, September 29; order through the 7NOW app and get a free oversized drink;

Barnes & Noble is offering free coffee with the purchase of any baked good on Wednesday, September 29.

Barnes & Noble will help you read a good book this Wednesday. Buy a baked good and get a free hot or iced coffee.

Au Bon Pain is running a "pay it forward" campaign this week, with all coffee for $1.

Jamba will offer free shipping on orders over $12 on Wednesdays. In addition, Rewards members receive double points all day.

Wawa also offers free coffee on Wednesdays for those on the East Coast. Not only that, but teachers can get free coffee throughout the month of September.

Tim Hortons has extended National Coffee Day through October 26, offering coffee for 99 cents. The free coffee can be ordered through the app or online, and new rewards members will receive a free donut through November 9.

Nescafe may send the "Ultimate Coffee Prize Pack" in its latest contest. That means free coffee for a year and a Nescafe red mug. All you have to do is enter the sweepstakes on Nescafe's Instagram page.

McDonald's is not explicitly celebrating National Coffee Day, but you can get a 99-cent coffee when you order through the app.

No one can argue with free coffee, but if you're looking to save some cash in the long run, it might be worth taking a look at some inexpensive coffee makers. You will find some of the best models just below all the lowest prices.

The best Cuisinart coffee makers can offer excellent value overall, but if you're going down the espresso route, it's worth checking out the best coffee grinders to make sure you get the perfect brew every time.