Instructions on how to obtain the Golden Axe, Golden Bug Net, Golden Fishing Rod, Golden Watering Can, Golden Shovel, and Golden Slingshot.
The Golden Axe
You will learn the Golden Axe recipe after you break 100 axes. Use Flimsy Axes to get this more quickly.
The Golden Bug Net
To learn the Golden Bug Net recipe, you have to complete the bugs section of your Critterpedia. Check Today's Bugs, Fish, and Deep Sea Creatures for bugs you can add to your Critterpedia today. The Golden Bug Net will break after 90 times catching something.
The Golden Fishing Rod
To learn the Golden Fishing Rod recipe, you have to complete the fish section of your Critterpedia. Check Today's Bugs, Fish, and Deep Sea Creatures for fish you can add to your Critterpedia today. The Golden Fishing Rod will break after 90 times catching something.
The Golden Shovel
To get the Golden Shovel recipe, you need to fix Gulliver's communicator 30 times. You will get the recipe in the mail the day after your 30th time helping him. You can check your progress in the Nook Miles App by checking the "Gulliver's Travails" achievement, although you will need to help Gulliver 10 more times after completing all levels of the achievement. The Golden Shovel will break after 200 times hitting rocks/digging up items.
The Golden Slingshot
After you shoot down 300 balloons, there is a chance that a golden balloon will float over your island. Shoot it down to get the Golden Slingshot recipe. You can check your progress in the Nook Miles App by checking the "It's Raining Treasure!" achievement. The Golden Slingshot will break after 60 popped balloons.
The Golden Watering Can
To learn the Golden Watering Can recipe, your island needs to reach 5-Star rank. Talk to Isabelle about island evals for advice on achieving this. If you find Lily-of-the-valley flowers on your island, it means you have 5-Star rank, so be sure to talk to Isabelle to get the Golden Watering Can recipe if you notice these flowers. The Golden Watering Can will break after 180 times watering flowers, but its durability is also reduced a small amount each time you use it without watering any flowers.