Here's an orchid that would probably be a good choice for this replanting project, Barkaria spectabilis
. I used to have this one--this is my picture--and now I'm sorry that I sold it off. It's a pretty common species however and I should be able to find another one.
This orchid is a good size and shape. It grows laterally or semi-pendant and it has nice thick white orchid roots. The inflorescence is compact too.