This is my modular Benchy display system. Print as many as you want and combine them to make a wall or a picture frame, etc. The keyed pieces have enough tolerance to fit nicely without hassle. I suggest playing around with the thickness/depth of the parts or not printing a top or bottom layer and use the infill patterns as an added effect. I printed mine at 16mm thickness which seems to be about 1/2 the width of a standard Benchy. I've added frame pieces that are modular as well.

Enjoy!