After building the MEGA Pokémon Magikarp and Gyarados Evolution brick set with my son, we found it incredibly frustraiting that the model would fall off the stand at the smallest touch… open the door to the room too fast and Gyarados would come crashing to the ground. Instead, we've modelled a wider base 4x4 base, with a taller, rounded stem and splash detail. This holds Gyarados up a lot more securely.
Model in pictures printed with Bambu Matte Blue filament with supports.