Tech entrepreneur Cat Goetze made $120,000 (₹1.1 crore) in just three days by selling her landline-like phone, which she'd built at home, thinking it's "cute". "I literally just hijacked a landline phone and made it Bluetooth compatible," Goetze told CNBC, adding that it felt like she'd "captured lightning in a bottle" as she made $280,000 (₹2.5 crore) in three months.