I could write a novel on this subject, with what has worked and what hasn't worked for me. I've camped a ton from my motorcycle over the last 10 years. I added it up a couple years back, and I figured in my current tent, I had over 150 nights of camping in it.
Much of this stuff is trade off's and playing a game of figuring out what is important to you. Also, the climate of the areas you plan to camp in can really change what you need, so keep that in mind. I camp in high altitude areas a lot, where a cold night can happen at any time during the year.
1) Tent: I won't go with less than a 2-person. I like to put my helmet and gear inside, and I also like the little extra room in case I spend a day or two in the tent while it rains. I have camped in an ultralight 1-person, and it I still use that tent now and again if I am doing something where weight and pack size has to be small, but for moto camping, I now use a Kelty TN2, although I am going to be switching to a Big Agnes Bike Packing tent. The hardest thing with tents, is most tent poles only collapse down about 21". Post panniers or top boxes have a max size of about 18". That makes it a problem. Pay close attention to how you will pack tent poles, and look carefully at sizes. A few tents i would recommend, from various price points are: REI Half Dome (Although this has long poles that can be hard to pack), Kelty TN2, MSR HubbaHubba, Big Agnes Bike Packing. The key is finding one that packs small enough at a price point you are OK with.
2) Sleeping stuff: I use a ThermoRest X Therm, Get an insulated pad. They work just as well in the heat, but if you end up camping on a cold night, it will be the thing that keeps you warm and able to sleep. For sleeping bags, I have a 0* comfort rated custom made Down Quilt from UGQ, I also have a 22* rated down bag. I honestly won't go with a bag that isn't rated at 20 or below, I have been caught out, and nothing is worth than not sleeping because you are shivering all night. This may very depending on your trip. I love the quilt for the versatility, but not everyone likes them. Down is king for sleeping bags. Packability, weight and warmth it wins them all. The only thing is, down can't get wet. Even though my panniers are waterproof, I store my sleeping bag in a waterproof compression sack. Most things, if they get wet is annoying, if you sleeping bag gets wet up high in the mountains, you can die. It is the one thing I make sure will stay dry. Pillow, get a Nemo Fillo, best pillow hands down.
3) Cooking: I have a jet boil, and a small backup stove. I often use both to cook a dinner. For cooking gear, I carry Sea-2-Summit X-Set that collapse down. How much you carry will depend on how much you cook, I like to have 2 pots so I can cook rice or something in one, and protein in the other. Your mileage will vary depending what and how you cook. Of course a spork and knife or things to go with that.
Those are the 3 things you need. Everything else is figuring out how much luxury or extras you want.
I carry a chair, because I am to old to sit on the ground anymore. I also carry a bluetooth speaker to listen to music. I carry a hatchet and a saw to cut wood and make a fire. I also carry a small collapsing lantern and a head-lamp, I like to have 2-3 lights.
For electronics, I have a 30000mHa battery bank. I can charge it on the bike during the day, it is plenty to charge go-pro's and my cell phone for 3-4 days. When I take the BMW, it has a pretty big battery, I have charged my phone and gopro off the bike battery many times. My Suzuki though, has a tiny battery I won't chance taking the juice out of it, so I have the battery bank.
Clothing: Bring a pair of light tennis shoes, and a pair of flip flops. The flip flops are great for sitting around camp and letting your feet air out after a day of riding, but having a real pair of shoes is great for walking around and getting to explore. The only shirts I bring are all Merino Wool t-shirts and long sleeve T-shirts. Easy to wash, they don't stink so bad, super comfy, but can get expensive. For pants, I have a couple of pairs of hiking pants. Jacket, I have a down jacket, down is always the answer. I don't pack more than 4 days worth of clothes, ever. I packed this same stuff for my month long trip to AK. Somewhere in 4 days you will find a place to stop and wash clothes, even if it is in a river.
Other than that, don't overthink it, and don't try to overpack. If you forgot something, buy it on the road, you can buy anything anywhere now, it is not problem. If you have a tent a warm sleeping bag, and get dinner, that is really all you need to survive, the rest is just what you want from camping.
