This official licensed San-X design of Nyan Nyan Nyanko features a kitten masquerading as a bubble tea drink on a chocolate brown messenger bag.

You can find it at Shoebuy from the Wizzywear line for $38.95, free shipping. A bit pricey? Good news, the site is having its once a year Spring sale, which gives you a 20% off of your purchase, making it a total of $31.16. So what are you waiting for? Go go go go!