Not all surprises are bad in a 3D-dungeon...
If you don´t want to present treasures obviously by using chests or treasure-piles, you have to revert to cards and overlayers (similar to traps).
But wouldn´t it be nice to have a real hiding-place for treasures? To create such a module by yourself you only need a cutter-knife, some sandpaper, a ball pen, a set square, glue and approx. 20 minutes time.
Cut with the cutter-knife into the gaps surrounding those floor tiles which shall cover the hiding-place later. Make vertical cuts through the floor of the module.
Remove the floor tiles from the released block by using the cutter-knife again.
It´s better to mark the cutting-lines with the help of the set square before you cut.
The thinner the floor-tile-sheet (and also later the bottom-sheet) is, the higher the hidden treasure can be. But you shouldn`t cut the parts thinner than 3 mm to keep them stable.
Cut thin sheets (approx. 3 mm) from each side of the rest of the block. The brickwork you add later on will look more realistic if you make the cuts displaced.
Again it´s better to mark the cutting-lines before cutting.
Bear in mind in what position the block had been in the floor, because you will glue the stripes back into the opening in the next step.
Now take those four stripes and glue them back into their former position into the opening of the floor.
You can use the sandpaper to remove unwanted cutting marks from the stipes. But do this only at the upper regions of the stripes, otherwise you will have some gaps between the walls and the floor of the hiding-place.
Cut a thin sheet (approx. 3 mm) from the bottom side of the rest of the block. This sheet will become the floor of our hiding-place. And again it´s better to mark the cutting-lines before cutting.
Now you can carve the gaps of the brickwork into the bottom-sheet and the walls of the hiding-place by using the ball-pen with a slight pressure.
Then glue the bottom-sheet back to its position into the opening.
Now there is only the paint-job left. It´s very easy and done in a short time if you use the brush-technique.
Put the floor tiles back to their former position and the hiding-place becomes invisible.
We wish you a lot of fun with constructing and painting.