Place a calendar on the floor ( or a facsimile of a calendar, or any chart of values).  Have students drop a dart (or more realistically a coin, paperclip, or poker chip) on the calendar.  The majority of the object's size should fit inside a square on the chart.  Paperclips work well.

If you are more "faint of heart" (translation:  you do not want to put any possible projectiles into your students' hands), simply SHOW the calendar and start with option #2 listed below.  Smiles!

Calendar

S M T W Th F S
 
    1 2 3 4 5
 
6 7 8 9 10 11 12
 
13 14 15 16 17 18 19
 
20 21 22 23 24 25 26
 
27 28 29 30 31  
 

 Options:

1.  The gathered data can be used for establishing empirical probabilities.

2.  List the sample space.

3. Find the theoretical probabilities for:
P(odd)
P(letter)
P(blank)
P(Monday column)
P(Monday column or even number)
P(odd or blank)
P(Wednesday column and blank)
P(odd or multiple of 3)
P(complement of an even number)
P(complement of hitting a letter)

4.  Are P(Wednesday column) and P(9) mutually exclusive events?

5.  Any other questions you wish to add.