There's a 25% off sale at The Cat's Pajamas going on from 11/16 through 11/18. Their stamps are very swanky and cute. I am in love with Sprinkle the cat as well as their sentiment stamps. There are some fun and unexpected themes, too, like pirates and knitting. TCP has single stamps wood mounted (although some are still available unmounted) and three holiday sets in clear photopolymer. Don't miss the penguins! The sale is easy: Alma set the site up so the 25% off is automatic!
MadRatRubber is offering 15% off everything while supplies last. This is being billed as a Holiday/End of Year sale, but an ending date isn't listed.