Leave lamps on timers to go on & off at odd times in various rooms. Timers at a DIY store.
Buy a pressure pad to slip under a rug at the foot of the stairs such that when someone steps on the rug an internal warning sound is made. Available on line from Amazon & probably other suppliers. The pads need a 13amp socket nearby to plug in to. The sounder going off would scare anyone back out thru a window!
I am deaf so I wouldn’t hear my alarm going off at night. For that reason & not to wake the neighbours, I have timers & a pressure pad. Works for me.
Mothers Day - interested in opinions
How do you acknowledge Easter.