Sure thing! Picture a small, lightweight drone with a modular body—easy to snap together from cheap composites. It carries a quick‑grip arm for tightening bolts, a compact 3‑D printer for on‑site parts, and a tiny solar array to keep it humming. The autopilot uses a failsafe loop: if the primary navigation fails, it switches to a GPS‑based homing mode that drops the drone back to the nearest base, then auto‑reboots. It can stream real‑time video so you can see it fix things while it’s in flight. Let’s sketch the parts list and work out the power budget—no downtime, just instant fixes!