Read this elsewhere and personally, I thought it was a bad bad bad idea, but I wanted to put this out there to see if I might be mistaken:
I learned a quick tip from a handyman on how to create a plunger without using a plunger. take a bucket of water and pour it from approx waist high into the toilet. This forces the water down and simulates the same effect as a plunger.
What do you think? Good tip? Or potentially horrible one?