Ice cream soda is a popular beverage made by combining ice cream and soda, usually served in a tall glass with a straw and topped with whipped cream and a cherry. The exact origins of the ice cream soda are a subject of debate, but it is believed to have emerged in the United States during the late 19th century. One popular account traces the creation of the ice cream soda back to the town of Evanston, Illinois, in the late 1870s. According to the story, a soda fountain owner named Robert M. Green accidentally ran out of ice for his sodas. In a moment of inspiration, he substituted ice cream, which resulted in a delicious combination. Green's creation, known as the "Ice Cream Soda," quickly gained popularity and spread to other soda fountains. Another claim to the invention of the ice cream soda comes from Philadelphia,

 Pennsylvania. It is said that in 1874, a soda fountain vendor named Robert McCay Green created the "soda with ice cream" when he ran out of cream for his flavored soda. The popularity of the ice cream soda declined in the mid-20th century with the rise of pre-packaged ice cream and soft drinks. 

Here are some ideas on how to celebrate Ice Cream Soda Day or simply enjoy an ice cream soda on any day: 

1. Make your own ice cream soda: Gather your favorite flavors of ice cream and soda, along with toppings like whipped cream, chocolate syrup, sprinkles, and cherries. Fill a tall glass with a scoop or two of ice cream, then slowly pour soda over it. Add your desired toppings and enjoy your homemade creation. 

2. Visit a soda fountain or ice cream parlor: Look for a local soda fountain or ice cream parlor that specializes in ice cream sodas. Treat yourself to a classic ice cream soda or try out unique flavor combinations they offer. You can also ask the staff for their recommendations.

3. Ice cream soda party: Invite friends and family over for an ice cream soda party. Set up a soda station with different flavors of ice cream, soda, and various toppings. Let everyone create their own customized ice cream sodas. It's a great way to socialize and enjoy a sweet treat together. 

4. Explore regional variations: Ice cream soda may have regional variations and names depending on where you are. Research different types of ice cream sodas, such as the Boston Cooler (a combination of ice cream and Vernors ginger ale) or the Brown Cow (root beer and chocolate ice cream). Try making or ordering these unique variations to expand your ice cream soda horizons. 

5. Share your creations on social media: Take pictures or videos of your ice cream soda creations and share them on social media platforms. Use hashtags like #IceCreamSodaDay or #IceCreamSoda to join the conversation and see what others are doing to celebrate. 

Remember, you can enjoy ice cream sodas any time you want, even if there isn't an official Ice Cream Soda Day. It's a delightful and refreshing treat that can be customized to your liking, so have fun experimenting and enjoying this classic beverage.