Cobra Kai

Happens all the time LOL!  2 spots I see it are in closets and bathtubs...Like something falls from a shelf or a shampoo bottle jumps off...I sometimes hear these loud sounds that shake the house, and all it turned out to be (I think) was my neighbor slamming his (big) truck door!  And that vibration would make other stuff fall later...(Although one friend of mine keeps asking if he can put cameras around my house, like a Ghost Hunter).

I think judging by cracks in my outside walls in the yard, cracks in my driveway etc.,  we've also had small earthquakes...

We have Radiant Heat in our floors. Love it, but when it cools down, the whole house makes noise