The bunny ears iphone case made another appearance in “The Box”. And I think this is the one Jess has (used without the bunny tail) but there are lots of options available at a range of prices in a rainbow of colors and variety of finishes.

Rabito* Bunny Ears iPhone Case (via eBay)

*Rabito haven’t id’d it on their site but they have posted about an appearance on ‘Girls’