I created MyCustomSnapFilter with my roommate as a marketplace for people to purchase custom-designed filter for special events. My partner and I designed and created hundreds of filters for events like birthdays, holidays, bat mitzvahs, graduations, weddings etc. We designed the site, created SEO page copy and bought search ads on Bing and Google. We had a steady flow of business until Snapchat introduced their own native design platform in June 2017. Despite Snapchat effectively killing our site, it was still a great learning experience and Snapchat even took note. (My co-founder and roommate is a UI/UX designer at Snapchat now!)