Golden tools are tools that are golden. They do not sell for a high price but they symbolize that you have worked hard to get them. Here is a list of all the golden tools and how to get them.
Golden Shovel Bury a shovel for a full 24 hours
Golden Watering Can Keep the town perfect for 16 days
Golden Rod Catch all the fish
Golden Net Catch all the bugs
Golden Slingshot Recieve the Golden Toolbox from the sky
As you may know, there are no Golden Axes of Golden Timers. Well that's all the golden tools and how to get them! Hope this helped.