I was also considering this theme! Here's what I cam up with:
Golden Ticket reward system/ or classroom economy (Willy Wonka)
Beginning of the year activity: Lollipop Buddies. (Give everyone a dum dum and have the kid find another student with the same one and interview them)
Styrofoam balls wrapped in cellophane for decorations
"100 Grand" for a board displaying great work OR
"Smarties" for the same thing.
Mars Bars for science (bboard or center)
M&M= math and money (bboard or center)
Gumdrops bb= cardboard cutouts of gumdrops painted w/ kids' names on them and then add glitter. Title is "Look who's 'dropping' in for a good year.)
Candybar looking nametags
candyland reading center
I found these ideas mainly on here so I def. don't take credit!