This morning in class III D we made the activity "Have you ever ...?"
The students have this chart.
They write a question for each point, then they walk around the classroom to find someone who has done one of these things and write his/her name.
After that they work in groups and ask the others in the group how many students have done these things. At the end the write the number of students in the last column and write sentences about the results.
As a follow up activity I asked them to write a sentence each point at home.
And here are some exercises to practice this new structure.
http://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_statements.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=3365
http://www.englishexercises.org/makeagame/viewgame.asp?id=3474