Can you help me save abandoned duck eggs!

A duck created a nest in front f my house. An evil cat killed the
mother. What can I do to sav the eggs?! A few ideas I have are:
1. Place eggs in another nest from another duck behind my house. If I did this I would use a device to prevent my scent from gettig on the eggs. Would the mother of the other nest accept them or still reject them?

2. Buy an incubator. I am willing to spend about $30 though. No more. Where can I get one quickly?

3. Is there an agency or place I can take them to to get appropriate care?

4. Can I use a box in my garage, and create a little environment to keep them at the appropriate temperature?

Any ideas to save these ducks would be greatly appreciated. It’s 11 pm right now, should I wait until morning or should I het them in the house now?