I do (did) a lot of SC and camping. I have a 22l plastic tub from Ikea that has my essentials in it. If I am flying, I throw a few must haves from that into a ziploc bag in my case.
I have a decent small sharp knife and 1 decent chopping knife - I managed to get a set years ago that had covers for both so they are safe just tossed in the box.
I have a small Ikea chopping board slid into the side.
A corkscrew, a peeler and a tin opener. A kitchen scissors.
One wooden spoon and one plastic spatula and 1 Sostrene and Greene flexible spoon for serving and scraping clean.
A wine cork (the ones to close a half-used bottle).
A wash up brush, scrubber for non stick, J cloth, hand towel, 2 tea towels.
Washup liquid and a handful of dishwasher tablets from the bag at home (enough to run daily +2), I can bring home any spares but prefer to use it than wash up on hols. I also usually throw in a couple of washing machine capsules for some laundry if needed (various capsules in their own ziplocs).
A box of matches and a couple of tea lights (to have in jam jars or similar - not just loose). Sometimes matches have been needed for BBQs or gas hobs. I usually throw in a couple of firefighters for BBQs as well (in a ziploc). A ball of twine (many many uses!).
I bought a salt and pepper which both had grinders in their lids in supermarket years ago and still use those.
I have a small roll of tin foil and one of cling film …I have big ones at home but it’s handy to have the small ones always in the tub so I don’t forget.
a pair of silicon oven mitts - I used to have bulkier ones but these were a gift and fit great.
I have a 100ml squeeze bottle (Muji) of washup liquid and a 250ml bottle of olive oil that I just refill from current bottle at home when packing.
A couple of clippits to close bags. A handful of clean pegs for hanging clean laundry or wet togs. A couple of ziplocs for mixing things, storing leftovers, picnics etc. a pack of ice-cube making bags for freezer (yes it’s plastic waste but I don’t get upset leaving one behind whereas often there’s no tray and I’ve left my own tray by accident a few times).
2 rubbish sacks from the kitchen roll. A couple of toilet rolls and a full roll of kitchen towel (I don’t usually need a full packet of either, but the loo roll count depends on the numbers (and who) is travelling and for how long.
A flask for picnics and a blanket and a cool bag (latter is usually full of goodies for the journey there with a couple of ice blocks).
A favourite board game and a pack of cards.
I generally do a food shop when we arrive and buy myself a mug there as I usually forget - but I will bring one if I remember.
It’s all a bit random. and that doesn’t count bringing the makings of one nice meal that’s easy to cook with me - and a couple of favourite spices and condiments. (My tub is at the back of a storage unit for 3 years as I’m overseas and haven’t been camping or on a proper holiday since leaving…next year!!)