I have two rusty old wagon beds, the little red wagons we had as kids. They already have drainage holes thanks to the rust. I just got one back on two cement blocks because the wheel parts on them are long gone. Should I sand them down and repaint them, or leave them au natural ? I am not good at the sanding and painting part, but will try if need be. I want to make flower beds of them. I thought plants with shallow roots like succulents would be good. Perhaps some violets also? Any other ideas would be appreciated.