Here are some options for creating an animation at home and are looking for some free alternative, try the following:
Tupi 2D Magic: http://www.maefloresta.com/portal/ind...
Animation Desk: https://www.kdanmobile.com/en/animati...
iMotion HD: http://fingerlab.net/portfolio/imotion
Pivot Animator: http://pivotanimator.net/
Vectorian Giotto: http://www.tucows.com/preview/501883/...
OpenToonz: https://opentoonz.github.io/e/
Krita: https://krita.org/en/
Rough Animator: http://www.roughanimator.com/
Pencil 2D: https://www.pencil2d.org/
StickNodes: http://sticknodes.com/
OTHER FREE ANIMATION PROGRAMS – http://www.jessejayjones.com/free-ani...
ALSO looks like you can get Flash MX2004 legally by following this tutorial: https://www.youtube.com/watch?v=pXvZU...