In addition to iodine, colostrum and a bottle, teats, milton etc, glucose, castration rings and applicator, temp ear tags, note book ( we record sex, dam, any identifying features for when they lose the ear tags and we have to work out who's who), old towels, we also have gloves and lube, LA antiB (Alamycin currently), Calciject, a selection of various sized disposable syringes and needles, milk powder left over from last year, but I don't think we used any then.
Cold lambs we rub with a towel and plonk on the radiator, or give to the dog to lick. We do have some lamacs, free samples left over, but we've not needed them.
We will have a pen set up in the polytunnel in case of emergencies - not done yet as we have over a week to go yet.
Big torch, head torch, spare torch

Shelter with fresh straw.
Water buckets to give the ewes a drink after they've delivered. I prefer the ones which hang onto hurdles or pens, as the lambs won't fall into, or be born in, them as they can with buckets.
We have some lambing books for if anything goes wrong, but usually

our lambings tend to be fairly low key (hope I'm not tempting fate)
What we don't have is spray paint cans as we don't put numbers on the lambs. We tried once when we had a much larger flock but a) we couldn't get one to show up on coloured fleece, and b) the dams licked the marks off within a few minutes

Somewhere there's a bottle of kickstart type stuff, which I carry in my pocket, but in all the years I've had that I have never used it. I think it's just possible it might now be out of date

We do have a stomach tube somewhere but it's not been needed so far, and we do have pulling ropes, but again not needed.
Since we stopped keeping Jacobs we have had very few problems with lambing, but even with primitives problems can occur so we still check them 2 hourly through the day, although we leave them for about 6 hours overnight, unless there's a blizzard. My lambing kit might seem a bit enormous but I have the stuff from the Jacob days so it's there.
And to cart it all about we use a cleaned-out licky bucket with a lid.
When we are checking the ewes, we just have gloves, lube and a phone in our pockets. Our land is around our house so not far to come to fetch the kit if needed.
Oh and baby bum wipes - you can never have too many baby bum wipes
