Grandparent Name Suggestions?

Note: This is for my soon-to-be niece or nephew that my brother and sister-in-law are having NOT us. :) Patience, my dear friends, patience.

My dad and step mom, Robin, are having a hard time coming up with grandparent names.

Can you help us out? What are names you've used for your grandparents or names that you've heard of.

By the way, they/we found out in a week and a half if it is boy or girl!! This is the first grand baby on both sides of the family and we are all bursting at the seems with so much joy! It's already hard to walk past the baby stuff in Target and other places. I don't know how or if I'll be able to stop myself once I know that sweet baby's name and gender! Chris just might have to confiscate my credit cards.

World's MOST EXCITED Aunt,