There’s spreading the cheer and then there’s spreading the cheer. Honda is using Twitter as its social media platform of choice for giveaways this holiday season.

As part of their Happy Honda Days ad campaign, Twitter users can retweet for a chance to instantly win a gift and help donate money to the Pediatric Brain Tumor Foundation. For every retweet Honda will donate $1, up to $100,000 total. Once the user retweets the daily tweet, they immediately receive an automated reply letting them know if they have won or not. Each automated response will include vignettes that illustrate their results. If a user wins, they receive a short clip revealing what they’ve won. If they don’t win, they will receive a playful stop-motion clip encouraging them to try again another time during the 30-day giveaway period.

Prizes include gift cards and smart watches with the big prize being a 2016 Accord Touring.

The sweepstakes ends December 29, 2015.