well putting the bed shaker in the "proper" place is much weaker than under the pillow but let's try it

I think they want you to put it here because under the mattress there's no risk of entanglement. Under the pillow... Could migrate.

With the dreamsky I just set it on my lap when sleeping in a chair. :blobcatgoogly: I will say that I am big fan of vibro alarms though. 100% recommend.