Make trees in advance: Use serrated knife to trim sugar cones to various heights. Using royal icing, cover trees with Tip 16 pull-out stars. Add Tip 2 dots pull-out snow; let dry.
Assemble house according to package directions; attach to board. Cut cinnamon gum into small pieces and attach to roof with icing in overlapping fashion, starting at eaves. Cut wafer cookie into 4ths and attach upright for chimney.
Roll out fondant and use gingerbread boy cutter from set to cut out 11 children. Pipe Tip 1 eyes, mouth and hair. Pipe-in Tip 2 shoes (smooth with finger dipped in cornstarch and Tip 3 clothing.
Pipe-in windows and door with Tip 7 zigzags (smooth with finger dipped in cornstarch). Outline window panes and door with Tip 3; attach mini jawbreaker doorknobs. Edge house seams with Tip 16 zigzags. Pipe Tip 7 and 3 snow and icicles on roof top, house sides and chimney. Pipe Tip 104 band banner over doorway; print Tip 1 message; outline banner with Tip 3 Break off 1 in. length of candy cane and attach with icing over door for bell hanger. Attach shoestring licorice to candy bell from kit and position on hanger.
Ice cake board fluffy with spatula. Build up snow around house and on walkway with Tip 7 zigzags. Add Tip 7 outline footprints. To make snowman, stack and ice three marshmallows, and insert pretzel sticks for arms. Shape hat from chocolate nougat candy and attach to head with icing. Cut scarf from rolled fruit candy and wrap around neck. Pipe Tip 1 facial features and add candy corn for nose. Position trees and children. Pipe Tip 3 ball mound of snowballs and snowballs in children's hands.