Another post about my son:

Neither of us has ever worn slippers of any kind. We take shoes off indoors primarily because of the dirt, but are so accustomed to it that wearing shoes in the house feels strange. But never say never: he has scoliosis and one leg is longer than the other, so he’s been wearing orthotics. He has now reached the point where walking around the house without them feels strange. He wants something to keep them on his feet, so we are looking for slippers.

There are so many styles of slippers! The first thing he’s going to try is just slipping the soles in some socks, but assuming we will need a next step, I’m looking for some guidance on what styles work well with orthotic soles. I’m going to guess not scuffs/mules, because they need a back to keep the sole in. Are loafer types his best bet, or the plushy ones that look like high-tops?

Any other advice from those of you who have experience with orthotic soles would also be appreciated!

ETA: things I've learned from this conversation:
Scuffs/mules/clogs/slides could work. They are the favorites among commenters here.
There are some pricey slippers/house shoes out there! I'd prefer to keep this purchase under about $50.
"Slippers" isn't a clear term: we are looking for something he'd wear inside only. We are in an apartment, so don't have the "quick run outside" issue you might have in a house with direct access to the yard.

I also have a new question: do "slipper socks" like these work with orthotics? https://www.google.com/search?.....SSA:160224

I'm going to show him three basic styles: hi top "boots", clogs, and loafers/mocs, and maybe slipper socks, to see what he prefers before we go any further.