My youngest son just turned 6 and this year he requested a "Lego Batman" theme for his birthday party.
I found this tutorial on "Pinterest" for "Lego" brick head marshmallow pops. I gave the marshmallow pops away as party treats and they seemed to be a big hit. I used the "Wilton Candy Melts Marker" to draw on the "Lego" faces.
Below is a recap of of the birthday cakes made for my youngest from years 1-5.
Wishing you birthday cake inspiration.