Hope you get somewhere soon. Some catering ideas …
Large plastic food containers with lids - for cooking couscous etc in.
Tinned sweetcorn add to pasta pots etc
Tinned tuna to mix in with pasta/noodles
Packet soups, noodles, rice.
Tin opener/sharp knife
Small chopping board
Desserts:
Just add boiling water custard with bananas
Soreen malt loaf etc
Baby food - yoghurt pouches that don’t need refrigeration. Also fruit pouches to add to porridge. Jelly pouches.
Brioche - cut them open add honey (squeeze style bottle)
Instant porridge oats - just add boiling water.
Dried fruit to add to porridge oats.
Small fruit salad in juice pots.
Nuts
Muesli bars
Some treat sweet and savoury picnic foods.
Drinks:-
Bovril or Marmite
Fruit teas
Instant chai
Hot chocolate
Soya milk appears to last longer without being refrigerated in my experience
Other suggestions:-
Ear plugs
Bag against the door to block hall lights at night