Illusion with a rabbit

I think this is the oldest illusion trick - hiding a rabbit in a cylinder and later  showing it to the public.
It is part of circus productions for kids. They always like it and every time wonder how it is possible to put rabbits inside.

The pattern is available HERE and THERE.
I am collecting different fabric patterns that will match my Circus theme quilt. And still thinking about best design of of the quilt.