OMSI Pin $3.95 OMSI Gyroscope $6.95 "Ask Me What I Did at OMSI" T-shirt $12.00 OMSI Patch $2.00 Experiencing Chemistry: Museum Manual The Museum Manual of OMSI's chemistry lab activities.$95.00 NO HASSLE MESSY SCIENCE WITH A WOW Chemistry for the K–8 Classroom$29.00