This is a very simple and well-known evaluation tool. On a large piece of paper, make a diagram like this:
‘My feeling about the course/workshop at the moment is:’
Participants place a cross under the picture that represents best how they feel at that particular moment. Again, this gives a very visual impression of how people are feeling, either during or at the end of a workshop. The result, especially the extremes, should be discussed if it is done during the workshop, to bring out suggestions on improvements or changes that could be made.