A white space and a white surface with Halloween decorations including a pumpkin, a skull, a bloody candle, a clock, and a dark wreath - Liudmila Chernetska/Getty Images Shadowboxes are essentially 3D ...

Shadowboxes are essentially 3D picture frames that let you store items, like important or sentimental trinkets that are too bulky to fit in a standard picture frame. You can easily create a shadow box ...