A fan of Build-A-Bear’s Facebook page said that the company would make a lot of money by selling FiM dolls/plushies, and the page responded that they will be coming out this spring.
Build-A-Bear did do a survey asking parents if their children would be interested in FiM bears, listing the mane 6, Spike and Celestia as possible toys. Build-A-Bear is a specialty shop usually found in malls, where the customer can pick out a stuffed animal based on teddy bears, licensed characters or endangered animals and then goes through multiple steps to stuff them and make them into their own unique creation.
There is no word yet on which characters will be sold, nor if there will be MLP-themed accessories for the bears or MLP voice boxes.
Thanks to Kefka at The Round Stable for the tip!