Scaffold board or similar (Meersbrook S8)

Hi, our lil spaniel Pip visited the vet today and was told that due to her arthritis, she shouldn't be climbing up steps much anymore. She is asking if anyone has any spare scaffold boards or similar planks so her daddy can build her a ramp up the back steps to get indoors without hurting her legs. It's the only way into the house as we don't use the front door and daddy also has a bad back so he shouldn't be carrying her too often either. Pip says thanks for reading, and daddy can pick up anytime that suits.