Like plug your phone to a powerful speaker system that reaches 100dB. That should wake everyone.
Doesn’t have to be expensive or HiFi, just loud.
May not be an option if you have neighbours tho.
Also, I’ve noticed that I can sleep through music and vaccum cleaner just fine, but I find certain sounds like TV speaking stressful, so maybe try finding an “annoying” sound.
Have you tried getting a louder alarm clock?
Like plug your phone to a powerful speaker system that reaches 100dB. That should wake everyone.
Doesn’t have to be expensive or HiFi, just loud.
May not be an option if you have neighbours tho.
Also, I’ve noticed that I can sleep through music and vaccum cleaner just fine, but I find certain sounds like TV speaking stressful, so maybe try finding an “annoying” sound.