Has (s)he reached THAT age? Celebrate.
cellophane bag (Wal-Mart, Target, Michael's)
Download the label here. Print using borderless letter size. Cut out one label (download has four) and fold in half. Fill bag with dirt and fold over that top. Staple the label to the top of the bag.
What could be easier?
Hope that they don't use this to plant a seed of revenge for your birthday. Dirt.....seed...get it?