Phone throwing toddler

My 2 year old has a habit of throwing our phones sometimes when we let him use them for screen time while out and about. He doesn’t chuck it across the room anymore but just lets it slide out of his hands if something else catches his interest or he gets distracted. We have protective cases, screen protectors, and insurance but I was just wondering if anyone knows of any clips that will keep the phones near him or attaches to a table or cart? We don’t want him to drop it and us not see it and then we have lost phones.

***Please don’t tell me to just not give him the phone. I already limit his screen time and only use it for when grocery shopping or eating out and he’s getting a little restless or bored. I don’t have an iPad or tablet, so the phone is what we’re working with right now.***

Thank you.