Looking for 3D printer and diy cnc components

[Digital Nick]

This may be a stretch but I’m looking for any components for building 3D printers or cnc machines including aluminum profiles, stepper motors/controllers/drivers, sensors, linear rails/guides, ball/lead screws etc. My budget is somewhat limited as this is for a child I’m mentoring but I do have some $ to spend on this. I already bought him a raspberry Pi 4 so we are also looking for anything that can go with that. I’m in the Bridgeport, CT area but travel between New Haven and Stamford regularly, and NYC quasi-regularly. Any help would be greatly appreciated!