Staff Development Tables v. Classroom Tables

I've noticed quite a difference in what's on top of the tables during staff development versus what is on the tables in my classroom and other classrooms.

My classroom:

• binders and paper
• pencils
• dictionary

Staff Development:

• binders and paper
• marker cup
• basket of candy and chocolate
• name cards
• pencils, pens highlighters
• inspirational quotes
• 5 water/coffee glasses/bottles
• 6 cell phones (all used at various times, off task)

Why do we have different expectations for the tops of tables?

[Just my random thought from the morning session and the afternoon session yesterday. I'll try to post more about this later today.]