Be blindfolded for a couple of hours (or more if possible). Be lead on a mini nature walk, have a picnic and not only experience the challenges of not being able to see, but also appreciate your other senses more.
Towards the end of your time with a blindfold on, have someone read a passage about the healing of a blind man (like found in Luke 18:35-42) and when the part of the story comes where the man can see, have them take off your blind fold. Experience but a minute part of this person's joy, and the blessings of sight.
