|"Hippity hop" by Taraput|
|"Year of the rabbit" by Thirdhalfstudios|
|"Woodland creatures" by Atoniamanda|
|"Antique bunnies" by I_will_fly|
They're from Spoonflower, a website where you can make your own custom fabric. They also have a ton of fabric designs submitted by other users, like these, which you can buy.