MRE's - yes. Coke? As mentioned in a few other threads, not the best choice when you might find yourself dismounted and running around in the desert. Dehydration waiting to happen. Add plenty of water bottles, in the trunk and next to each crew member.
Spare mags and flashlights scattered about? No, they be in your "go bag."
Legend makes a nice set of these. Even then, you can never have enough
Spare fi'ty ammo boxes strapped into the crew compartment will work too, unless you've got it attached to the turret. Even then, you can never have enough ammo.
Not much else in the crew compartment as that stuff just becomes a missile when you hit an IED. Maybe some WP grenades (taped onto the radios usually) and little comfort items. Accurate Armour makes some bichin Dorito bags. I guess those are pretty harmless...
Radios? Not, mounted in your vehicle, or on your kit. If you did bring a spare for any reason it wouldn't be unprotected in the dusty trunk.
Spent fi'ty casings appropriate in the turret, maybe one or two in the vehicle. Some make it onto the hood but don't generally stay there long.
And read this thread:
https://armorama.kitmaker.net/forums/175916#1476839It has a link in it to an even better thread on M1151 stowage which would be virtually identical.