Tip 1)
Make sure if you ever do plumbing work, that you are 100% confident that things are reconnected before you leave the house. When I was 28 I thought I reconnected the water line to a faucet in an upstairs bathroom, but thought at worst case scenario it drips a little bit while I am gone.
Left for work and a few hours later my wife (who was 9 months pregnant) frantically screaming at me on the phone that the bathroom flooded and the water came busting through an 8 foot whole in the ceiling on the floor below.
As I'm thinking about it, make sure your wife knows and understands how to turn off the main water and power shutoffs.
Tip 2)
If you have a basement, a battery backup for a sump pump is a worthy investment.