One of my favourite creatures in the extended Harry Potter universe is the Niffler. We get to meet and follow a niffler’s shenanigans in Fantastic Beasts And Where To Find Them (2016).

This t-shirt is another one from Qwertee, which was a limited edition one. Check out Qwertee to see if you can find something else on theme: https://www.qwertee.com/r/249cd838c1 (referral link).