The office should be inviting but clean. A home look is good. Keep clutter and papers in cabinets and out of sight. Have a table set with flowers that enhance the room. There are many nice plastic flower arrangements. Post a bulletin board in an area that everyone has access to. This will give them the feeling that they are included in what happens in the office. Coordinate the colors used and use colors that are calming, such as pastels.
Provide a simple way for clients and workers to leave suggestions and notes. If the office is large enough put in a small couch rather than several uncomfortable chairs.