Nail Polish
Scratches are very unpleasant, but not all scratches warrant repair. You can cover it with nail polish and it will work fine. If one layer is not enough, you can always apply a second layer for better results and the scratches will practically disappear.
Tires
You don’t need to buy new tires to improve your winter grip. Not everyone has the budget for that. You can lower the air pressure a bit and the tires will grip better on slippery roads. If your car is stuck in a layer of snow, you can use carpets or pieces of cardboard to free yourself. Place them in front of the tires and guide them to get out of the snow.