It was a great opportunity to teach them some things and learn others too. Especially unusual things like washing houses (I do not know the English word for that, these are places people were coming to wash their clothes, usually a water source and stone washing places, under a roof). Their history was surprisingly interesting.
To be honest I did those kinda things already, except for the singing, but having a small child those are the kinda things he likes at the moment. No doubt his tastes will change over time, but I'm gonna try to join in with his interests at least until such time as he doesnt' want his "uncool" dad doing so.
Besides the skills to keep them alive, teach them to walk, talk, behave, read, get dressed, keep clean, be safe, etc. There are: picking the right neighbourhood for young families, finding the appropriate schools, dealing with friends of your kids and their parents, planning interesting holidays, adhering to all the mandatory festivities at the corresponding days.
If that does not count as leaning new skills, I do not know what does.