This is a Wireframe bunny rabbit that i made. It prints well with no supports and becasue it is mostly empty space it also prints rather quickly. I printed one on my ender 3 that filled the entire build volume in the z axis in under 1 day of print time.
TIPS FOR PRINTING: I recomend lowering the object into the build plate by 0.8mm or 1mm. otherwise the bottom does not have a large surface area. By doing this you will have a flatter bottom and a more secure print that will be less likely to fail later on.