It always makes me laugh when I see some of the camping kit people take on bike trips when a bit of ingenuity would avoid it. I’ve never taken a chair if I’ve got hard panniers that can be removed and sat on and I put a small piece of plywood under a bag on the rack then use that as a flat surface to cook on rather than even the smallest table.
Why take a gas stove and cylinders when you can use a petrol one and just take fuel out of your tank when you’ve used up whatever you took with you?
Airbeds and camp beds are bulky and quite frankly unnecessary. Have a look at what cycle tourers carry because you won’t see them carry an electric compressor to inflate an airbed. Closed cell camping mats are comfortable enough and if you feel the cold take a silk sleeping bag liner. If you take a camp bed then you need a bigger tent, bigger tents are bulky and just as important, they’re colder. Taking a footprint for a tent is a waste of space unless you’re planning to camp on scree or are too lazy to spend a couple of minutes checking for sharp stones but you still see some people carry them on a bike. The same goes for a tarp, either buy a tent that’s waterproof or pitch it under trees but it’s just more clutter unless you plan to use it and leave the tent at home in summer.
Sort that lot out and you’ve got room for more T shirts and underwear
Why take a chair rather than sit on a pannier? It’s more comfortable and you can relax with a glass of wine/beer, rather than bring perched on a pannier lid.
If you use metal panniers then you have a table, no need for a piece of ply.
If you use plastic panniers then there are small tables that pack to the same size as a piece of ply and are more robust.
Closed cell mat, no problem when I was 20, now at 60 an insulated inflatable mat is more comfortable and takes up less room even with the small inflator than a closed cell mat.
Foot print, I use a piece of cheap heavy duty tarp cut to size, needed in many campsites in Spain where the ground is all sharp stones.
Pitching under trees either results in the tent being covered in tree sap or bird shit, neither of which are pleasant.
Tarp, great for sitting under when it’s either too hot or when it’s raining. Do you really want to be stuck in a little tent for longer than necessary?
No need to overload the bike to be comfortable, everything including clothes, stove etc fits into the two plastic panniers and top box.
Occasionally a small dry bag on the rear seat to hold anything displaced if a supermarket visit is undertaken before arrival at a campsite.
Dry bag is also great for washing clothes, fill with dirty clothes, water & persil in the morning and leave to soak in the sun all day, rinse when you get back from the days ride and hang up to dry overnight, under the tarp if it’s wet/damp.
Use merino wool and most items can be worn even in the hottest of weather for a couple of days before they need washing.