Out of Print Clothing
Replace your dad's decades-old "Proud Dad of Some College Student" tees with one of Out of Print's studious-cool book jacket art shirts. There's One Flew Over the Cuckoo's Nest for any dad that survived a house full of teenage drama queens, Walden for the dad who dragged you camping, Moby Dick for the beer-belly dad (just kidding), On the Road for the grown-up beatnik dad or maybe he became a dad in 1984. The list goes on.
Whatever his literary bent or your intended message, there's a meaningful tee to be had for dad.