If their parents are really close to me, I usually give my inaanaks pasalubong everytime I go out of town, visit them on weekends, and have lunch with my family. In fact one of my inaanaks just asked for a pasalubong here in Iloilo and I mailed it to Manila! :)
TOO MUCH haha :) When I was a kid I never understood why I got presents like clothes. So now I make sure to get my one and only inaanak toys and fun stuff like tents filled with plastic balls!