I travel pretty much prepped out for disaster.
One thing many RV-ers may not realize is that many RV parks and camps are built in flood plane zones, the theory being you can move out quickly. So pay attention when camping near rivers and lakes. I was at one camp that had a sign post taller than me and it was marking how high the river had flooded before, which their highest mark was nearly 9 feet!
I spent a few decades living in far flung ports where disasters stuck, so being prepared for the before, during and aftermath to me is important. It also comes in handy for other reasons.
I keep my gas tank topped up before I camp, so if I am leaving in an emergency, I don't have to wait in line at a gas station. Also this is super handy for any electrical outages, I already have a full tank of gas for the generator. What's the use of having a generator if you have no gas to supply it?
I travel with nearly full water tanks. I have broken down before on a hot humid day and it was nice to be able to flush the toilet, make lunch, wash dishes and so on. Also when arriving at camp, if dead tired, it's nice to not have to deal with the water hookups right away, it can wait. Also campgrounds have to make repairs and sometimes their water is turned off and it's nice to have that tank load of water ready.
I have a pantry full of canned goods and extra foods like rice and pasta. Most of these I bought on discounted sale and added to the pantry. Also have dried beans on hand. A small pile of dried beans can feed one a long time. Combined with corn (from a can) or rice, or cheese, it makes a complete protein. This extra pantry food has come in handy so many times. I don't travel with a car, so I am able to be super flexible about my length of stay in remote camps. I once ate out of my pantry for over a month without shopping and was astonished at how much I still had leftover. Maybe it's because I love a wide variety.
My first aid kit keeps getting bigger. I have a remedy for just about anything now. I also save leftover pain medications, you just never know when you might have something overwhelming happen.
Allimax is non prescription and makes a terrific antibiotic without side effects. I have it in all three methods including capsules, liquid and paste form too. Matter of fact the liquid Allimax saved my ear. I had the most painful horrible ear infection and Allimax liquid cleared it up in short order. Honey is a great antibiotic type treatment for wounds, though the pricey medical grade honey (from New Zealand) is the most effective, I found regular honey works too, just takes longer.
Batteries... I buy big packages of sturdy batteries since I do have flashlights and items that use them. I try to limit my type of battery uses, but still... I end up with D's, AA, AAA and 9volts. So far I have escaped needing C's.
Also I have portable solar lights, which are super useful. I wish I had a solar panel, it's on the list, but don't have one yet. The solar lights are super useful, some are motion activated, so it conserves battery life. I have also used them for security reasons when camping. Like a motion solar light that comes on if anyone approaches my camp or locked bicycle at night etc. Mostly it startles wildlife and keeps the raccoons away.
Stash extra garbage bags! In the event of an emergency, you want to be able to bag up the mess, if you have no extra bags, heaven help ya.
I have a powerful battery operated spotlight which can come in handy for a disaster or emergency at night.
One of my best disaster pieces of equipment I use daily too, is a Berkey water purifier. It requires no electricity and no water pressure. It can purify river or lake or rain water as well as out of the tap water. Awesome taste. I love it. The filters last between 6,000 and 30,000 gallons depending on water quality and some camps serve up some truly awful water that slows down the purifier to a drip, but I keep carafes of already purified water on hand, which I top up daily from the purifier. The filters can be removed and scrubbed with a brush, rinsed and reused over and over.
I stayed in a place with stinky water, it smelled awful! But the purifier removed all the stink and it tasted wonderful.
Pet food... I carry lots of extra pet food with me so the pooch need not worry. Matter of fact, I typically keep him a 2-3 month stock around.
Bug stuff... I travel with lots of assorted bug repellents and bug and ant killers etc. Disasters seem to to bring on the bugs.