It's like your phone's back pocket, storing things like recently opened apps, and keeping them handy for when you need to open them again. (businessinsider.com)
But there's a specific focus on stocks for kids — you can choose to create a custodial account when you're signing up — which makes it handy for parents. (policygenius.com)
This bag is lined, making it handy for holding just about anything you might want to carry along with you. (thespruce.com)