The beautiful Fairy Castle of Princess Callia, favored daughter of deranged Emperor Sentatian.
It is a box of fairly standard children’s toys. There are dolls, blocks, carved knights and animals. Everyone will think, “Oh I had one of those when I was young.”
A new substance is found in an out of the way area and kept very quiet. It is found to make a perfect counterfeit diamond. Only the most expert of expert appraisers would even have a hope of noticing that it is fake. Only one problem: if it gets wet it starts to slime and if it is saturated, it turns into a glob of gel.