From beaming actors into the class room to plucking things out of space, the second day of Y Combinator’s S21 Demo Day was a fresh snapshot of what nearly 200 startup teams believe is the future of innovation.

Yesterday, the TechCrunch team covered the first half of this batch, as well as the startups with one-minute pitches that stood out to us. We even podcasted about it! Today, we’re doing it all over again. Here’s our full list of all startups that presented on the record today, and below, you’ll find our votes for the best Y Combinator pitches of Day Two. The ones that, as people who sift through a few hundred pitches a day, made us go “oh wait, what’s this?”

My experience with Indian culture is that it has a long history of valuing math and science over any other subject, which is why Spark Studio’s twist on online enrichment was refreshing. The YC company offers live, extracurricular learning classes for kids in Indian households — with a twist: The classes are about music, art and communication. As seen by the success of Outschool, small-group classes for school-going children can be a scalable way to supplement traditional education. Spark Studio is selling to kids between the ages of 5 to 15, which are highly impressionable, exploratory years.

Growing up, I was the only kid in my predominantly Indian family friend group who didn’t gravitate toward STEM. There were no services, other than the local library, to quench my interest in writing and reading. A service like Spark, if it gains the trust of parents, has the potential to make currently unconventional interests more conventional. And with over 400 students, and less than 2% churn, Spark Studio has early inklings it may be onto something. — Natasha