To build a robot that has two legs and some sort of body holding them together. The robot may at one point have arms to hug things or crush them.
My robot design is almost a complete copy of PlenMini ver 5. The MiniPlan robot is was deisgned by ShinWeiChiou on thingiverse. With my robot the servos are slightly bigger so the original design will not work. I modeled all of the files in OpenSCAD; this gives me further parametric control of how each part fits together which I find important for designing a robot. Walking is a tricky things, for small children sure. But companies have spent billions of dollars making robots walk on stairs and uneven terrain, something babies do for the cost of food.