This Etsy shop, Retired... Let's Do Lunch sells chipboard gingerbread house kits. Once they arrive, you paper and paint them the way you like them.
This stand up spooky Victorian greeting card kit includes everything you'll need to make and decorate the card.
Here's another stand-up greeting card kit, "Happy Haunting".
This is the Mini Monster stand-up greeting card kit.
Here's a Day of the Dead wedding card box kit you can put together.
I wouldn't use this kit to make a wedding card box, I'd make a jewelry box out of it!
Here's a gothic wedding card box kit as well.
This Little Monster House is a premade faux gingerbread house for Halloween decor.
This Particularly Creepy Haunted House faux gingerbread house also comes pre-built and decorated.