If desired, cut small fortune cookie-sized strips of clean paper. Using a fine tip edible pen, write out fortunes or messages. Set aside.
Melt the chocolate candy melts in a microwave-safe bowl at 50% power in 30 second increments. Stir well after each heat cycle. As they begin to melt, stir to use the residual heat of the bowl to smooth out the chocolate, as much as possible. Do not overheat the chocolate or it will become thick and clumpy. If this happens, try adding a 1/4 teaspoon of vegetable oil at a time, stirring in well to smooth the chocolate out. It sometimes helps.
Using a spoon, spread a thick layer of the melted chocolate into the cavities of the bowls. You will need 2 half spheres per smash bomb. Refrigerate for 10 minutes until chocolate is firm.
If needed, re-melt the leftover chocolate (using the method above) then, using a pastry brush, spread a thin layer over the set chocolate. Refrigerate 5 minutes until firm.
Carefully remove the chocolate half spheres from the molds. Fill half with your choice of candy and a fortune.
Re-melt the leftover chocolate (using the method above) then, using a pastry brush, carefully brush the rim of the empty half sphere with the chocolate. Immediately press into the filled half sphere and align the halves together. If gaps are visible, use your finger or pastry brush to apply extra melted chocolate to fill them in. Refrigerate for 5 minutes until set. Repeat with remaining half spheres. To smooth out the seam, if necessary, dip a spoon in hot water then dry. Using the back of the heated spoon, gently smooth out the seams. Heat the spoon as often as necessary (just be sure to dry it before using) to melt the rough edges of seam into the sphere.
Melt a small amount of candy melt colors to fit your theme. Place in a piping bag (or small ziplock sandwich bag) and snip a small opening. Drizzle over the tops and sides of the spheres, enough to cover the seams. Repeat with additional colors to create layers if desired. Refrigerate until firm.
If desired, use coordinating sparkling sugar colors or sprinkles, and distribute over the drizzled candy melts before it sets.
Alternately, cutout holiday-themed mini shapes from fondant. Using an edible pen, embellish as desired. Moistened the back of the fondant shape with a tiny bit of water to adhere to the spheres.
Using a wooden or rubber food-safe mallet, smash through the chocolate sphere shell and enjoy the treats!