5th Wheel for Opa

I'm12 years old and I want to do something special for my Opa and Grandmother. Several years ago my mom lost our home. We couldn't pay the bank. My Opa (dutch for grandfather) and Grandmother gave us their house. They moved into the old 5th wheel they have and told us to feel comfortable in our new home. I realize now the what they had done and I want to give them something back.

The 5th wheel they live in is needs many repairs and one wall in the bedroom has rotten wood. I want to raise the money to be able to give them a newer 5th wheel to thank them for giving us their home. My Opa works hard to help us with food and all and he never complains about it. My Grandmother is disabled so she can't work. He will be retiring in a few years and I have heard him say he may have to keep working to buy another 5th wheel.

I don't want him to have to do that. I have found many 5th wheels online that would be nice for them and that is how I came up with the amount. They don't need anything fancy, just better than they have now. Any money that is left over, I will have him donate to the Heart Association.