Glass Paperweight Base Needed

I'm looking for a source for metal, wood or plastic bases for glass dome paperweights. This is the popular 3” diameter round beaded edge glass dome like sold by PhotoWeights.com. The base I’m looking for is recessed to receive the bottom of the glass dome. I have seen several websites that sell the completed paperweight with a pewter base in different designs but after months of searching and contacting companies that I’ve found that offer them (they do not want to share their sources) I am still looking. Any recommendations would be appreciated. I could use a lot of them each month. Thanks!