Wolf, I’m sorry but this is an uncharacteristically dumb post. A wolf is cunning and smart (as your posts usually reflect) are you turning into a turkey? In a volunteer relationship you do not owe anything to the “employer”. There is no fiduciary relationship. There is nothing to “repay” as you put it. There is no halachic issue here. Next you’ll be asking to tithe salt. Seriously, there are real issues available for theoretical halchic discourse. This is not one of them.
Ctrl Alt Del (Wishes he could Ctrl Alt or Del some posts)
Hey, that would be a nice tag.