I just stumbled upon this website of witty and original t-shirt designs. Two of my favorites are “Experimental music” (included below) and “Puzzled Putter.” You can see all the designs here.
Design related videos
Just a link to online videos related to design. Check it out by clicking here Relevant to CEP817 and CEP917 (and maybe even CEP818)
I stumbled upon your stumble upon.