This. Have a lightning connector cable that Ys up to both of these and charges them so that you can keep on listening. Edit: So at the top, these could basical

This. Have a lightning connector cable that Ys up to both of these and charges them so that you can keep on listening. Edit: So at the top, these could basically fit into like a sleeve. Could also have an attachment that hooked over the ear or into it like some headphones do. That way they're less likely to fall out. Man, I wish I knew someone with some manufacturing connections to get this going.