You can try
www.Cafepress.com
I think as long as when you're signing up, you check off that your shop is not kid friendly, they are ok with adult stuff. That keeps your shop out of their onsite search results.
You can even set up a shop with them and have it intergrated with your site. They have a huge selection of items that you can customize and sell. I've been using them for years and have done quite well with them.
Best of luck!
Bill