I think what you do for those people is wonderful Lysha! See if any of these sites might be what youre looking for. I did a search for bath chairs and came up with some things.
http://www.healthfitnessstore.com/bath_chairs/Nova_bath_chairs_home.htm
http://www.adaptivemall.com/colbatchair.html
http://www.planetmobility.com/store/shower-cmomde-ch/anthros/bath-chairs/index.html