My everyday bike kit on the big bike is... extensive. The tool kit, which is in the top tube bag includes everything I need to fix anything on the bike with the exception of bottom bracket puller. I do have a lockring tool (the really light weight one from Wolf tooth), but no chain whip or spanner for it. I carry it for when in remote places, I can always borrow a big spanner from a farmer or something, a lockring tool less so. I also have 4 tire leavers. Why 4? Well they have a nasty habit of going ping into the undergrowth. I don't want to have that happen and then not have enough tyre levers for the rest of a long trip/race, I keep meaning to get some retro-reflective paint to put on them to make them easier to find. I have a number of spare Di2 cables, and spare brake cables. Spare brake pads, and all the tools to operate this lot, there's even a small torque wrench. It's extensive, but I've used may of the tools at one point or another. Whether it was swapping brake pads under a tree on Christmas day in Germany, to adjusting derailleurs, handlebars, or fixing flats. Could I get away with some sort of multitool, a pair of tyre levers, and a pump? maybe. Would it be as quick and efficient to use? no. You carry your fears. One of mine is being stranded in a remote location with a broken bike, so I have the stuff I need to not be in that position.
I also ascribe to Kim's view re pumps. I have a Road Morph G pump in my frame bag. It's big, and relatively heavy, but it works really well. I used to carry the Lezyne mini track pump thing, but it just wasn't reliable enough. I've lent my pump to a number of riders at the side of the road when they are trying to get their tyres back up to pressure using some stupidly tiny pump thingy.
That's the tool bag.
In the frame bag I tend to keep a battery pack, Di2 charger, hivi (purely in case of unexpected France), chamois cream, head light, hair brush, plasters, deoderant, towel (+ soap + plug), and some spare spokes. I treat this bag on the bike a bit like a handbag. It's got all my useful stuff in it...
My saddle bag contain a spare Wahoo, spare gloves, ear plugs, space blanket, usually a spare pair of shorts, leg warmers, and maybe a fleece or other jacket.
In winter I tend to have a big fully jacket in a dry bag strapped to the aerobars. This is less to wear on the bike, as to wear while sat waiting for the train home, or while fixing a mechanical.
Ultimately it all adds up to I carry too much crap on my bike. I'd probably find that on most every day rides I may be a little quicker, as I am carrying less weight. But then for a race or an Audax, I'd be adding it all back on anyway, and then it comes as a shock. I basically train with the same kit I race/audax on. The only thing I tend to change is the water bottle (size depends on the whether and distance, as much to do with which one I grab for the ride, as anything else), and the food in the stem cell.
Everything I carry I've used at one point or another, with the exception of the spokes, tho I had one spoke break on a 200 in November, but I decided to ride on with 31 spokes, and hope for the best. On a race, I would have included going via a bike shop to have it fixed.
J