A Magical Visit From a Leprechaun
This takes some planning, but the excitement it generates in your students is well worth the effort!
First, make sure you have coordinated with the maintenance department. Ask if there is some type of easily removed chalk or paint that you can use on your classroom walls. Tempera paint usually washes off fairly easy, but be sure to consult with maintenance to avoid any problems.
Next, line up a volunteer or two to come in on the day of the St. Patrick's Day party. As you take the students to recess or lunch, the volunteers will come in to the classroom and flip over a few chairs and 'mess up' the room a bit.
And, of course, all of the students' leprechaun traps must be made to seem as if they were struggled with -- that the leprechaun tried to get the gold and then fought valiantly to escape each one of their traps.
Place green footprints on the wall, desks and/or maybe some posters that are on the wall using the paint or chalk method decided upon with maintenance. If you have a suspended ceiling, you may even lift one of the tiles and direct the footprints toward it.
When the students walk in the room, it will appear as if a leprechaun has been playing in the room and narrowly escaped the traps!
This will be a St. Patrick's Day the students will not soon forget!