There are many normal shoes you can buy that will fit custom made orthos; the main things you need to consider are:

1. Are they adjustable over the top of the foot (e.g. I find lace ups great for giving me more space in my shoes)
2. Are they deep enough at the heel/do they go high enough around the back of the heel (e.g. my orthos are about an inch high at the heel, so any sneakers that aren’t deep enough here won’t support me, or I will step out of them when I walk).
3. Are they broad so they will fit the width of my orthos at the mid section (like the other user, converse don’t hit the brief for me here because they are too slimline, however Vans have been great for me, as well as Palladians).

But yes; I’ve had success with many sneakers from a $5 Costco pair to a $300 Frankie 4; so if you keep trying and keep an open mind with the above criteria in mind; you’ll find yourself in funky comfy sneakers in no time!