I had some moulded hearing aids made after an accident in 2001. Move forward 20 years (sheeeeeeet! Is it that long) and I have dismantled them and modded them to take normal ear buds. (in my case cheap and nasty Samsung phone buds) They actually work way better than I could have expected. I even use them when riding my motorbike on the open road and stuff that is almost unrecognisable owing to wind noise even becomes legible.
All that means:- Get some moulded IEMs and you'll never look back!
All that means:- Get some moulded IEMs and you'll never look back!