Bring's surface is a 2D surface which can be made by stitching 30 negatively-curved squares together edge-to-edge. This tool lets you choose images to put on the squares and see what the pattern looks like when unrolled over the entire hyperbolic plane, displayed as a Poincaré disk.
choose up to 4 images to use as tiles
drag to scroll the tiling, using and to line it up nicely
click on the tiles to cycle through the images and their rotations (or to leave it up to fate) you can also hover over a tile with your mouse and use the keyboard: Q and E to rotate and 1-4 to switch the image
the resulting tiling as a px square PNG with anti-aliasing