If I can just inject some realism into this.....
I carry a piece of wood to put under the jack if the ground is soft. Changing the wheel is a likely occurence at some point!
I carry a selection of spare fuses, a torch, and a fuse guide (I know the fuse guide is just a guide!).
Anything more than that on a modern Morgan is expecting a lot.
Even in a nice hotel car park with a supply of tea and biscuits wouldn't make a great day on holiday. And you'd need some car clothes. Having said that I did change a Metro Turbo exhaust in a hotel car park in Torquay once, using nothing more than the tools I carried in a roll and having borrowed some old clothes from the hotel owner!
I carry some baler twine to rehang the exhaust. And a test circuit and spare relays. I carry a tool roll but its more of a comfort blanket.
In the dark and wet, just phone for the AA/RAC!
And we were all looking forward to the definitive list of tools! After all, your splendid tool tray was designed to cater for them all!!