|Sheldon's House Gryffindor Shirt|
As of yet, being the mere muggle I am, I've been incapable of finding an exact duplicate of this t-shirt (any help from you trusty readers is more than welcome!). Until I do, however, try checking out some more Gryffindor tees from the Amazon affiliate link below.
Featured on The Big Bang Theory episodes
S11, E22: "The Monetary Insufficiency"