Backyard fort building supplies - what actually works?
Tried using PVC pipes and got frustrated trying to cut them straight. Switched to using the white sturdy plastic connectors (like the Zome Ball stuff) and it's SO much better. Kids can actually build it themselves without me intervening constantly. If you're thinking about this, skip the PVC approach and just spend the extra money. It's worth not wanting to pull your hair out.
We did something similar with those ball connectors and honestly it's been the best backyard investment. Kids spend hours building and redesigning without needing me to cut anything or fix their mistakes.