UPDATE 2021-12-21
Added links to the Tinkercad files - this should allow you to download a copy and make changes. I really like the design, have now printed almost 100, but this is difficult to get perfect where all of the pieces fit and the card stays together. I have three versions. you might print all and see which one works the best.

Better 120% Gingerbread
https://www.tinkercad.com/things/fgjS4i7ufU4

looser 120% Gingerbread II
https://www.tinkercad.com/things/5qUcbtwU4FI

stronger 120% Gingerbread A
https://www.tinkercad.com/things/9jJFG5uRwUo

UPDATE 2021-12-17
I was still having problems with getting the pieces to stay slide together and stay attached to each other. I made the tabs easier to work and made the ones that go through the roof a little longer. The settings on this project are critical for a successful assembly. you might try both designs at various Z height settings. So far I have printed almost 100 using three printers.

I really liked Nakozen 's design, He has produced some great card prints. I have tested 3 or 4 of them and run into a common problem. I had the pieces fall off when I removed them from the bed. I wanted to send these in Christmas cards through the mail, and needed them to hold together. I also wanted them a little larger to fill most of a 4" x 6" card.
I scaled it up to 120% and made the tabs thicker in Tinkercad. I printed a number of samples and determined that around 90% on the Z thickness worked well., I had trouble getting the roof pieces to attach. My goal is to have at least 50 of these printed and in the mail within a week. I can print 2 on my Ender 5, and 4 - maybe 6 on my Ender 5 Plus and Rat Rig. Leave me a comment if you would like me to share the Tinkercad design.