Build-A-Bear Workshop celebrates 20 years in 2017 with monthly Parties on the 20th and Make-Your-Own 20th Birthday Celebration Bear   Retailer unveils commemorative bear and thanks Guests for 20 years with lots of heartfelt fun ST. LOUIS, 2017-Jan-19 — /EPR Retail News/ —  Build-A-Bear Workshop, Inc. (NYSE:BBW), an interactive destination for creating personalized furry friends, is celebrating 20 years in…