1. Cut strips of striped wallpaper to fit around 4-, 8-, and 12-inch-diameter Styrofoam cake dummies, with an extra inch sticking up at top to create a rim. For a decorative edge, trim top edges with a pinking blade. Affix paper with spray adhesive, then hot-glue the tiers together.
2. Wrap lollipop sticks with 1/8-inch-wide black tape to create stripes. Make your own cotton candy using a rented machine and the sticks.
3. Poke finished sticks into Styrofoam. Fill the areas inside the paper rims with sanding sugar.
The Wallpaper Company black-and-white striped wallpaper, homedepot.com. Taylor Foam round cake-foam set, taylorfoam.com. Confectionery House 8-inch sucker sticks, confectioneryhouse.com. Chartpak Pickett Graphic 1/8-inch tape, officedepot.com.