I told them I would bring them extra flashlights, batteries and water but they should get themselves perishables.  

Cheap curtains hung up on the first floor, a welcome mat, lights on a timer, battery operated fake candles on a timer, big size 11 men's shoes and big men's jacket hung by the front door, two empty dog bowls, a tie out in the back yard (for a dog), fan on a timer, foldable table and chairs with a tablecloth and centerpiece, and radio playing on a timer.  

Some have sealed batteries and some are replaceable.

The parts are fairly cheap and they are on the easier end of things to install but you may not wish to do this.On the burners there is a device that looks like a rectangular box called a spark module and it generates a spark to light the burners.

Module #1:  Establish an investment, where the income from it pays for 3 things.  

I have a remote key but when the battery dies then what??

I am currently a renter, I had a drone battery that caught on fire.

We are searching for one that is user-friendly and has a module for presentation purposes to lenders and investors as well.

Oh and let's not forget a new sump pump with a battery backup.

MileIQ is good as well but can drain battery.