I have the window stickers and the outdoor sign of a very well known security company. Purchased them off Ebay. Expensive for what they are, but worth it to me - I felt it would be more legitimate looking than some of the truly fake signs and stickers out there.
My entry lights are on sensors, so they turn on at dusk and off at dawn.
I keep all windows and doors locked, including the gate to the backyard, w/a padlock.
My house came equipped w/an alarm system (standard in our subdivision), and the keypad is not visible from the street, so a burglar would not be able to look inside and see if the system is armed or not.
There has been some crime over the years, but it usually is something very targeted or wayward teens looking for easy scores. So many of my neighbors have so much stuff in their garages, they park on the street, doors unlocked, and leave things like laptops and iPads in plain sight.
Another interesting suggestion from a gun safety instructor: Hubby wanted a firearm, I don't feel comfortable w/the idea. We decided to take a gun safety class b/c we live in TX, and everyone around us is armed, so probably a good idea to have some idea on how to properly handle a weapon.
Hubby asked the instructor what the best firearm would be to protect the home from intruders. He suggested a shotgun, but said the best deterrent would be to have the audio of a shotgun connected to the window sensors. In his experience, any burglar who hears that sound is going to quickly & quietly head in the opposite direction!