I thought someone would have at least taken some of the more interesting ones, and created something just for fun, as theymos gave permission if I remember correctly. IF Cyrus did ever get to the stage of merch being a viable option, I'm sure there's third party processes which would be able to automate most of it, however it would be up to the customer whether they are happy with that or not.
Indeed there are several out there -
Redbubble,
Shopify (after what happened with Ledger I'm fully aware that it may not be a choice) or even
Merch by Amazon. Most of them only do T-shirts but I'm sure there has to be one that make more than that.
I really find the idea interesting, not only due to the fact that it would generate revenue for the costs of the show, but it would also be a neat way to show our support for the forum. Again, we've got such creative people here that I'm sure we'll have some good entries for the merch.