A frequent question I have been asked about the vOICe is “what can you do with it”? This is a good question. Many blind people are well adapted so can readily do most things sighted people do so this question can also be considered as finding a use case for vision. As of this writing, we cannot drive and depth detection is a challenge until we get affordable off-the-shelf video glasses with stereo cameras. I am compiling a list of tasks that need sight to do. Ideally, there should not be any other way to accomplish said task.
I asked the question on the seeing with sound mailing list and here are some of the tasks that members have suggested. Please add more to the comments section.

• Painting and checking that the surface is fully covered without
  having to touch and thereby ruin the wet paint.
• Street cleaning, “seeing” thrown-away garbage from a distance such
  that you can go an pick it up.
• Cleaning up the garbage left behind in other indoor and outdoor
  places such as cinemas, conference centers, markets, etc.
• Mowing the lawn (as a paid job), tracking the edges of parts that
  have already been mown. This can be tricky because of low contrast
  between mown and non-mown areas. Little bright flowers such as
  daisies can sometimes make the task much easier.
• Farming, seeing non-uniformities in crop growth from a distance,
  or locating (silently standing) cattle from a distance.
• Shorelining the pavement and familiar environments without touch.
  This may also be helpful in carrying goods around by having both
  hands free for carrying.
• Signing your name
• Locating objects that you have dropped or locating objects by color