Well, without delving into artists'time or interest, there's two ways to do it:
A, have the shirts printed by a supplier and sell them, or B, set up something like a Cafepress account.
Cafepress is easy, quick, and takes away
all the worries of handling the shirts, money, sales and customer support. The drawback is your profit margin- if that's the idea- is absurdly low. Keep the price of the shirt reasonable and you're making only a few dollars per. On the third hand counterpoint, you save time and aggravation with not having to deal with shipping and customers, so it's a balance. You also don't have to worry about unsold stock.
Having the shirts printed can be workable, if you don't mind the few extra E-mails and trips to the post office. However, you'll have to fork out a fair chunk right at the beginning, and hope to recoup the loss. If they don't sell, you're stuck with 'em.
However, both options miss the main point of actual sales. One fellow I know has had a Cafe account with six different artworks available for four months, on a strip that sees nearly a thousand regular readers, and has sold about five items, total.
I've talked to other artists ("Strippers" in the old
Bloom County parlance.

) with similar results. Most use CP, and so aren't "out" anything but a little time. I did note that Howard Tayler of
Schlock Mercenary had small batches done professionally (rather than through a service like CafePress) and it seems to me I recall him mentioning that 24 shirts took nearly a year to sell. (And
Schlock gets something like a million-plus page views a month- KeenSpots' seventh or eighth best strip.)
Thus, I would suggest for those who might like a
Fuzz shirt, perhaps JimRob can offer a couple of different designs, or a choice of two or three strips. Those on the board (and the regular-readers-but-not-lurkers through a main page post) can "vote" as it were, and JR can (all assuming he's interested) post it to CP for an indeterminate period.
And with the massive influx of hard cash, perhaps he can go 'round the pub and have a pint on us.
Rennen