I'm repining this onto Jen's board so that mom can see the box (which I assume is Styrofoam). It appears to be just wrapped in wrapping paper and you (measure, then) stab the sticks through. Seems very doable!
This is one dedicated mother !! Props to her it came out GREAT All out lego party - dessert bar, large legos made from capri sun boxes, lego garland, lego games (incl memory game), and coloring wall feature, etc. I can't wait to be mommy someday :)