Yellow plastic is worth its weight in gold. OK, so maybe that's not a thing. But it might have been for a Vallejo, Calif., man who authorities allege stole thousands of dollars in Lego merchandise ...

The man, while inside the store, allegedly stacked several Lego sets near the emergency exit ... he came back to the Legos and placed them inside a black plastic bag before leaving the business ...

Over time, Lego sets can make serious money on the secondary market. “Dealers around the world trade the plastic bricks like any other asset,” says Adam Williams in The Daily Telegraph.