Genghis Khan @ The Tech - Discount Tickets

The Genghis Khan exhibit at The Tech will only be available until October 24th. I've been hunting for some promotional codes, and the best one I've been able to find so far is LEXUS, which brings a $25 adult ticket down to $20 (just enter this code when you log in or create a Tech account). Member of the museum only pay $15 for an adult ticket. If anyone out there has a better discount code, please don't hesitate to post it in the comments! Details on the special exhibit below.