Another forum I go to uses
this, if you don't want to keep costly inventories that may or may not sell.
I don't quite know how it works, but it looks like you upload the design images and then people can buy direct from them a range of products (you decide) with the image/logo on. It looks like you can add a mark-up too that they send to you (now Terry is smiling).
There must be other things like this too.
Here is the shop I go to for that
forum. They have been some of the best T-shirts I have ever bought. The logo is quite boring on these, but they can add far more ellaborate ones.
While there is no official Terry Love's Plumbing and Remodel merchandise (and I will cetainly not create any for fear of being instantly banned), there are a few alternatives for the die hard fans. I found
this or perhaps
these!