Rear Storage Options

[Legokcen]

Good afternoon. I wanted to see what ideas folks have had with their rear storage locations. I've done some searching and looked at what some folks have online but wanted to ask this group also. I'm a lifelong Eagle Scout so I likes to have a first aid kit and other things to be prepared or help out if needed. I've got the spare tire in place and have used some of the space around it. What do you all do?

First Aid Kit
Jumper Cables
Power Inverter
Towing Accessories
Spare Oil
Misc common used tools

What do you all do with the cubby to the left? And how have you all used your storage locations?