Boiling a bunch of eggs at once can be tricky. To keep the eggs from bumping into each other and cracking prematurely, all you need is a tea towel.
Made from Pinterest offers this tip (gleaned from the writer's mother-in-law):
The towel acts as a cushion for the eggs so when the water boils the eggs don't jostle and knock against each other and get cracks. You can do a lot of eggs in a large pot this way if you lay the towel in between layers of eggs. I like this when I am making a lot of eggs for Easter. I can do a large batch, and they come out perfect for dyeing.
Fold the towel over the eggs, fill the pot with water, and proceed as usual. No more egg disasters.
No Cracks, Easy Peel, Perfect Hard Boiled Eggs [Made from Pinterest]