I have a pug collection. And there are many pug things to collect. Cold painted Austrian miniature bronzes, old postcards, European porcelain and pottery figurines... pug figurine nodders. My best piece is a c.1907 sterling silver Tiffany paperweight of a sitting pug dog. And at a thrift shop, last week I found a stuffed pug pillow from about 20 years ago. Pugs were very popular dogs in Victorian times.
If you can find copies of the Sotheby's 1997 auction catalog set of the Duke and Duchess of Windsor's estate sale, there are a lot of cool pug dog collectibles in there, even jewelry. The Duchess of Windsor loved pugs.