I just had a roll in shower with grab bars installed in my master bathroom. I bought it from Best Bath Systems (easy to google, many models to choose from!) During the remodel, I also had an ADA height toilet installed.

(I live in a ranch style home, so no experience with stairlifts.)

This is all for my parents' home (my mother is the one with MS).

House was already ranch-style...shudder to think of the split level and multi-storied houses we seriously considered before buying this one (pre-MS).

Gutted the old master bathroom (shower and toilet in a tiny closet next to a large dressing area with sink): installed roll-in shower, ADA compliant toilet, and wall-hung sink. Tiled walls and floor. Ceiling hung shower curtain, ceiling heat lamp, ceiling track lift for transfers. Installed Lubidet in toilet for perineal hygiene.

Set-back hinges on all the doorways.

Ceiling track lift with portable motor over bed and also in family room for transfers to recliner chair.

Ramp at front door (attached garage without an entrance into house).

Accessible computer work station in the family room.

Ripped out the grass in the back yard and put in paved paths surrounding flower beds. Pathways are wider than the wheelchair.

I just bought a new single level home myself, and will be installing a ramp to the front and back doors and widening the bathroom door for my parents' visits. Already installed set-back hinges on the guestroom and bathroom doors.

I haven't done too much, but I did put a stairlift to the
lower level/basement/laundry/pool rm/den/and used to be DH's workroom.. I love it.

I have a small scooter for indoors and a larger one for outdoors. I use my walker when I'm not in a hurry. I was thinking of putting an outdoor porch-lift, but this old house would almost have to be rebuilt. too many stairs and alcoves, so I get out through the garage, as I can still walk/wobble a bit.

Good luck Vlys.