A gift-wrapped challenge reveals cookie toys -- with moving parts?!? But a metallic robot cake with working lights is an even more ridiculous ask.

It's a Christmas baking miracle when the contestants make a cake pop nativity, followed by a cake with an upside-down Santa.

The hapless bakers tackle a trio of wintry animal doughnuts before attempting an edible ski scene -- and it all goes downhill from there.

To celebrate Hanukkah, the contestants make hand-dipped dreidels, then take on an elaborate tiered cake made with kosher wine.

After a sticky round of Rice Krispies treats and cocoa, the lucky bakers' loved ones get to help them make a turkey cake with all the trimmings.

Three "Nailed It!" fan favorites return to ring in the new year with a crumbling resolution cookie and a "tipsy-turvy" cake with four tiers.

Instead of baking, they'll be making. But can these not-so-crafty contestants deliver on a DIY diorama ornament and an incredibly ugly Christmas sweater?