Use Lucky Charms to bar graphs, circle graphs. 2015 with 5 New Clover Hats version in stores now.
Give the lower elementary students 20 marshmallows to graph. They will take the information from the bar graph to color in a circle graph.
A great way to combine St. Patrick's Day (3.17) and Pi Day (3.14)
Upper elementary students can just be given a sandwich bag of cereal. They can skip the bar graph and just create the table for number of marshmallows, fractions, decimals and percents.
Then use the percents to create a circle graph with 100 segments already created for them.
Hope you enjoy.
Fonts from http://www.kevinandamanda.com/fonts/freescrapbookfonts/