a long time ago not to expect presents from Grandma and Grandpa. Spending quality time with them and learning from them is what they should value. My grandparents were all real old by the time I came along, once I left on my mission I have one grandparent left. I'd kill to go back and have some time with them now....
That said, my parents do pay for some cool stuff for the whole family like trips trips to Bear Lake etc.