3d printed parts. Tires and helment. Trial and error progression for helment. Modded ender3 pro. Pushing the limit of resolution for the setup, but fun results!
The trick is to not use dimensions designed for injection molding.3D printed bricks need different parameters.
Given the larcenous cost of Lego, I see a future in 3D printed interlocking bricks.
Some printing channels are printing entire Lego kits at larger scales, 2x, 3x, one guy is printing a Porsche model at 1:1.