A solid go-to theme for boys seems to be superheros - so here's inspiration to Frost your Superhero/Superman theme.... but don't forget about this older, but still fresh!, Frosting for a superhero theme (here)
Create a fun city backdrop with superhero masks and fun "pow" words! Source
Carry the city theme onto your containers! Use paper or contact paper to create "windows" on simple glass or plastic jars! Fill with bold candies to really pop. Source
Look for opportunities to add capes to everything! This DIY stand could be used to highlight any special treat! You could use colored rubberbands and add a cape to all the drink cups, too! Source and tutorial
Take comic book pages to make a colorful bunting for an inexpensive, powerful impact! Source and tutorial
The MUST have on your dessert table is kryptonite! Source and tutorial