In my family I don't think there's a specific dollar amount somewhere that says how much Mom and Dad have loaned/given to each of their three children. I know I owe them quite a bit - more than a thousand, less than ten thousand - for helping with various things like car repairs, buying a mobile home (the place we were living at before was NOT safe for us to stay in, and our landlords were dragging their feet and court would have made it even longer) and so forth. I know they also "sold" a car to my sister, helped my sister make a down payment on their house plus several mortgage payments during a particularly tight time, helped brother with a down payment on HIS house, etc. That said my parents have mentioned offhand that while they want to ensure that all three of us get equal treatment in the will, it is likely that when their plot of land is divided into three, the other two will get the parts that do not have the house on it, and I will get the third (with the house/garage) since I am the only one who does not own a permanent home. (Mobile home doesn't count since I have to pay rent on the land it sits on, etc). My siblings agree that seems fair for now. If I manage to buy my own place in the future, maybe that will change.
I do know, however, that my parents are keeping a sort of a running list of who wants/would appreciate certain things, like the bedroom set that was passed down from my mother (made in 1916 I think), the china hutch, Mom's Precious Moments collection, Dad's genealogy files, etc. At the moment I think I'm also ahead on furniture, simply because a) if I'm likely to inherit the house anyway, it makes sense to leave things as they are, and b) I like how the older furniture looks and my siblings don't.