I've used this technique to make windows for churches made of gingerbread for years. I hand-cut cookies and attach them to the inside wall, then frame the exterior with gingerbread "stones." I used to put little mini-lights inside each church for a gift that charmed kids -- heat vented through holes in the roof and were camouflaged by the steeple. Today's LED lights burn so cool that you could leave them on for hours without fear of melting windows.

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