Special equipment: 2 rectangular Styrofoam blocks; 2 loaf pans; 2 small florist Styrofoam balls, trimmed to fit in desired mugs; 2 mugs; package of 10-inch wooden skewers; miscellaneous flower cookie cutters; clippers
Put the semisweet and white chocolate chips in separate medium glass bowls. Fill 2 medium saucepots with 2 inches of water and set over medium-low heat. Place a glass bowl on top of each of the saucepans and melt the chocolate until smooth.
Place 2 rectangular Styrofoam blocks inside 2 loaf pans to anchor them. These will hold the dipped apples while drying.
Insert a skewer lengthwise into each apple slice. Dip each slice into the semisweet chocolate, coating it completely with a thin layer. Poke the end of each skewer in the Styrofoam for the slices to set completely, 10 to 12 minutes.
Once set, drizzle the apples with a thin stream of melted white chocolate using a spoon and return them to the Styrofoam to set.
Use flower cookie cutters to cut 8 to 10 flower shapes out of the pineapple rounds, leaving the core of the pineapple rounds as the center of the flowers. Skewer the rounds going completely through the core and top with a single blueberry. Next, continue to skewer the remaining fruit according to your own preference, including: 1 strawberry per skewer, 3 to 5 grapes per skewer and 1 to 3 cantaloupe cubes per skewer, each topped with a blueberry if desired.
To build: Place a Styrofoam ball in each of 2 mugs to anchor the skewers. Use pieces of kale to cover the Styrofoam. Cut the skewers to desired length with clippers. Place the skewers into the Styrofoam and arrange like a flower bouquet. If not presenting right away, cover lightly with plastic wrap or a 2-gallon resealable freezer bag and refrigerate for up to 48 hours.