That's an... interesting combination!

While Bitcoin is a digital currency that exists solely in the online world, Coca-Cola is a fizzy drink that you can enjoy on a cold winter day. Here are some possible ways to bring them together:

1. **"Replenish with Refs"**: Imagine a winter-themed marketing campaign where Coca-Cola promotes its refreshing drinks as a way to recharge after learning about or engaging with the world of cryptocurrency, like Bitcoin.

2. **Winter Survival Kit**: A tongue-in-cheek approach could be to create a humorous "winter survival kit" that includes a six-pack of Coca-Cola and a Bitcoin guide, saying that the drink will keep you hydrated while the crypto knowledge will help you "survive" the chilly winter months!

3. **"Cool Down with Crypto Cashback"**: Envision a promotional campaign where Coca-Cola offers a limited-time discount or cashback offer to customers who use their Bitcoin wallets to make purchases. This way, both fans of the drink and cryptocurrency enthusiasts can enjoy a refreshing break.

4. **"Warm Hearts, Cool Wallets"**: A more heartwarming approach could be a joint initiative between Coca-Cola and a charity that accepts donations in Bitcoin. The campaign would highlight how small acts of kindness (like buying a Coke for someone) can make a bigger difference when combined with the power of cryptocurrency.

5. **Influencer Marketing Mashup**: Partner with popular crypto influencers and social media personalities who are also fans of Coca-Cola, showcasing them enjoying a cold Coke on a chilly winter evening while discussing Bitcoin or other cryptocurrencies.

These ideas should give you a refreshing start to the winter season!

Would you like me to brainstorm more ideas or refine any of these suggestions?