Dude... take
fiberglass work off of your list. I find
wiring downright fun. Painting is rewarding. Woodworking is satisfying. Even mechanical repairs have a certain appeal.
However, there is no way you want to volunteer to do fiberglass work. It is terrible. It is toxic to your brain. It is bad for your lungs. Even with an approved respirator, it sucks.
The only way I would do fiberglass work for free is if it were on my boat!