Coaster Lenticular - Harry Potter (Expecto Patronum)
The OMGC says...
This Harry Potter lenticular design changes as it moves. The design features the famous "Expecto Patronum" charm which wizards and wizards can cast when they need special protection from Dementors. When it moves, the coaster transforms to reveal Harry's stag Patronus.
Dimensions: 10 (w) x 10 (h) x 0.5 (d) cm
Composition: Cork backed