?Yad Sdrawkcab Ti Si Ro
There are many ways to celebrate Backwards Day on April 5. You've seen two of them already. Both would take too long for me to continue them here and would also make more work for you than it would be worth.
So already we can see that some methods of celebrating this special day are better than others.
Walking backwards is fairly easy. Driving backwards is fairly dangerous and usually illegal.
Some for easy be may backwards sentence a of words individual the speaking. (Okay, so I wrote backwards one more time for effect.) Much more than Yoda-speak this is.
You could read a book backwards if you don't mind spoilers. I would suggest a short one, but the choice is yours.
Doing your daily tasks backwards might cause some problems and in some cases be impossible.
Putting your clothes on backwards will make you look silly and perhaps indecent. Then again, in some cases, it could be an improvement.
Why else have you got? It feels like I'm missing some major possibilities.
Addendum: I was afraid this would happen at some point. Maybe it's happened earlier, and I just didn't know about it. There already is a National Backward Day. It was January 31. That one was just "Backward" without the "s" though, so I'm still counting today as a different occasion.