I don't know if those types of things represent absolute happiness to me, but it makes me very happy to be in the company of my family under ideal conditions, spending happy time with them. Same thing for friends.
I really love it when I can help someone out, whether it's giving them advice and them following it and benefiting from it, or the knowledge that they benefited from something I did. Although I have noticed that I can be very selfish and arrogant with this sometimes. If someone does not follow my advice and goes on thinking the problem was solved when I can see it wasn't, I'll be stubborn and won't be happy for them. Also, if they refuse my advice I become resentful and bitter about it.
But getting back to your core question, I also like it when someone I know and care about is able to give me advice or lend a helping hand, and it really helps me or shows me they care. This makes me feel that I have a strong bond with the person and they are someone I can trust. Trust is a hard thing for me, so it truly makes me feel bliss when I'm in a situation, receive aid that really DOES something, and we can establish a connection off this.