A bank is an excellent place to hide money, but most banks have a withdrawal limit, meaning you don’t always have complete access to your money when you need it.
You can empty one of your plastic soup storage bowls, preferably dark-colored and not transparent. Put your money in a double Ziploc plastic bag and put it in the soup bowl.
Your freezer is a long time favorite hiding places for all sorts of things. People who have trouble with their credit cards have been know to put their credit card in the freezer to help them stop using it.
Finish off a box of cereal and throw out the inside bag. Replace it with an envelope of money, close the box and put it back in the pantry with your other cereal.
Surprisingly, your toilet tank doesn’t only serve for storing water when you flush. You could also stack your bundles of money in it, away from the eyes of intruders.
Forget how open your yard looks. It’s still one of the safest places to hide your money. Leave yourself a note or put a subtle marker such as a rock or plant near the area to keep track of where the money is hidden.