For screen, place white edible paper over pattern. Use black edible marker to trace design. Paint details using edible colors (add white for lighter shades). Brush screen with piping gel and attach paper.
Mold controller using geometric cutter from classic set. Place cutter on non-stick pan; fill to 3/8 in. deep. Tap to settle, chill until firm. Bring to room temperature and cut shape horizontally in half. Attach two lollipop sticks with melted candy to back of pointed ends, extending 3 in. to insert into cake.