Hidden cam recommendations?
 

Looking for something that will last at least 12 hours in standby mode. I expect maybe 60 minutes of actual recording but I'm not sure when in those 12 hours it will be triggered. Preferrably pinhole cam and without need to be plugged into power. I have a pretty large budget to use, so don't need just cheap suggestions.

Location is hotel bathroom. I will have access at start of 12 hours then no access until the end of that or later. Can hide it in plain sight cuz I will be staying there so my stuff being there will not seem odd. Will not have much time to setup though.

seriously?