Sip your way back through the layers of geologic history with this stratigraphy-inspired drinking glass

Either way

you're likely to get entirely different tapes (we can't guarantee that you won't get duplicates if you order another mystery set on a separate order)

a way to bring the night sky into your living room

Butterflies Canvas Shoulder Tote Physics Sip your way back throughFill this butterfly tote bag up with all your winnings from the farmers market, a picnic lunch, or a big stack of biology textbooks. This canvas bag is reversible so you can wear it with the printed design on the outside or the inside two bags in one!