A few days too late, or a rare German non-baby joke: unzip HPFSTL17.ZIP, view HPFSTOOL.EXE with E.EXE, scroll down and remove the "damaged"/"filled" middle section of the eggshaped ASCII art. You should see a few tools.
Or execute this Rexx script in the directory of HPFSTOOL.EXE, and open EASTER.EGG with E.EXE (and a non-proportional font). The script does not remove the "damaged"/"filled" middle section of the eggshaped object:
CALL CharOut 'HPFSTOOL.EXE'
PARSE VAR all . 'Green=Bitmap' rest
CALL CharOut 'Easter.Egg',rest
CALL CharOut 'Easter.Egg'
Or open the attached file (21 kiB) with E.EXE, to not have to download and process HPFSTOOL.EXE. Use E.EXE, do not use TYPE.