Cheap and easy feed for houseplants. When you boil eggs - save the water. Sieve out any pieces of egg that may have busted out during boiling. This water, when completely cooled, contains lots of minerals from the egg shell and makes a good feed for houseplants and can be used as often as you water.
Wow, what a great idea! Thanks!
I feed mine left-over, cooled tea, coffee, and the water from steaming veggies too. It seems to really perk them up.
Also you can use just the egg shells. My grandmother used broken up egg shells and used coffee grounds for her houseplants. Works great!
People can even drink the water from boiling eggs. Just let it cool and you get lots of minerals and calcium for free. Just make sure the shells are very clean before boiling the eggs.