Have much the same list & am wondering where to hide the grease gun. Probably I buy a new small one. The car has Devol bushes so every 5,000 m it supposedly needs greasing but I do it at 1k.
If your Roadster has the same tool tray arrangement as my 4/4 (under the rear shelf) a small grease gun will fit in there. If not, under the seat is an alternative. (I keep all the greasy stuff in an old sponge bag)
Also, you can buy pocket size cans of motorcycle chain lube, useful if you get a soaking and the leaf springs start to squeak.
