I turned my explosion box into a "Christmas Box" for the kids to drop in slips of paper with their good deeds for the month of December. It could also be used to save money for a big present, or as a gift to someone else.
The small strips of red paper around the edges of the box help hold the four sides together (there is another set under the lid). I just glued to the four sides together and added those strips on the inside and outside of the box. I cut the slit in the lid with a craft knife.
For the tag, I just heat embossed ultra thick embossing powder over the top, then stuck it in my freezer for a few minutes. Then take it out and twist it a little to crack it.