Slate Auto, the new Jeff Bezos-backed EV maker has just released the "Amazon Essentials" of the auto market: a basic pickup with minimal features and even hand-crank windows. However, it you're keen to modify your Slate with 3D printed parts, there's a full range of manufacturer-approved and provided accessory design files, ranging from center console organizers and phone holders to bed-mounted tool caddys and interior bag hooks.