I call it a "playset" because it comes with two families and a priest to color and make-believe they are attending Mass. And because some kids will want to dive into the playing part first (and color afterwards), I also colored everything in the playset.
My kids used an empty Amazon box to serve as their church. They cut out and pasted the different elements (like the pews, stained glass windows, tabernacle, etc.) in it and played for a long while. (They later added the peg dolls from their collection for additional fun.)
They also used another copy to decorate a wooden birdhouse and transform it into a church:
We also played around with the set and made a "construction paper church."
Check out all the details of the printable Catholic Mass playset in my Etsy shop.