My dad was used and abused for his skills constantly. He was a carpenter and came from a long line of carpenters (he was very good at it too). He was always doing work for free for elders, CO's, Kingdom Halls around the city, repairs at assembleys etc. He'd provide the materials and tools and labor for free.
He genuinely loved helping the brothers and sisters but knew the ones "higher up" in the clique were taking advantage. I remember very clearly him taking me along to an old sisters house. She was in hospital and my mum had keys to her house to look after her cat and water the plants etc. My dad and his mate (also a carpenter) fitted her a new kitchen FOR FREE. She wasn't very well off but really appreciated it and got him a card with some money in it.... which my dad then put in the contribution box.
I was always being asked for immigration advice. Even by JWs i didn't know. People would pass my number around and i'd get random calls from foreign JWs in the circuit.