my needs are slightly different, since my G450X 'Adventure Light cannot carry that much cargo, so most everything is miniaturized/optimized...!
(bikes can generally carry WEIGHT, but not BULK...)
(disclaimer: we sell SOME of the items I mention here, no promotion intended, I usually buy the product, test it, and then stock it!)
1. an ultra small - yet effective - sleeping bag, sometimes called Adventure Lite, sometimes called 'Amplify/Down-light' but the identical product.
rated down to a real 5-degrees C, it works for me nearly year-round, and when it is colder, I then use the item below...
2. a sleeping bag liner - serves 3 purposes - this one I have had around 20 years, bought it in Saudi Arabia, desert nites can be chilly: it lowers the temp rating of the sleeping bag even further, it allows you to climb filthy into a sleeping bag, keeping the sleeping bag clean, and it is useful on warm nights, as a mosquito defense system INSTEAD of a sleeping bag...
3. an army drinking bottle
'wif' in-built 'fire-bucket: this goes in my tank-bag, so I do not need a hot 7 heavy Camelback on my back. it has the Camelbak tube though, so I can still drink easily.... M-U-C-H easier to fill my bottle from a handy tap while even on the bike, than the old over-hyped Camelbak (my opinion

) Trail running - Camelbak! Adventure biking - let the donkey (beneath your legs - carry the flipping weight - NOT your back!)
the benefit of the 'fire-bucket' is that when taking the water bottle out, everything else stays in place inside the tank bag...
4. Ultra-small braai grid, take me 2 minutes flat to erect, and here it is pictured with a 9.5kg roll of brown paper on top, so yes, it CAN handle your wors and chops!
more to follow...