How do you practice off the ice?

The other day, I was using my aerobic step to practice my jumps on the living room floor.  It's not terribly challenging because we only have one set of risers.

After a few minutes, I noticed that Prospero, our greyhound, was lying down near the kitchen, waiting not-so-patiently for any scraps that might come his way.

I looked at him, then I looked at the step. I looked again to double check.  Even lying down, Prospero was taller than the step.

"Prospero, stay."  Then I very tentatively waltz-jumped over him and cleared him easily.  If he noticed that he had become a training aid, he didn't show it.  He never took his eyes off the kitchen.  So, I did about 5 more jumps over him.

Yesterday, at my practice, I imagined him lying on the ice and worked hard to make sure I didn't hurt the imaginary dog.  I'm pretty sure that improved the height on my jumps. 

So, what do you do to practice at home?  Do you practice spins in your socks on the kitchen floor?  Have you found a way to practice Salchow's without twisting your ankle?  Let's hear what you do.