IDK. But I carry what I think I could need for day-long trips: (1) Small pliers to tighten priming valves should one loosen and to loosen the knurled screw valve on my sump level check brass bleeder; (2) spare sparker (had one Champion fail but now use NGK so maybe now less likely) and plug wrench; (3) brass brush to clean deposits off plug electrodes; (4) can of starting ether in case of some kind of trouble starting not foreseeable now. 

Regarding your question about what tools should be in the toolbox, the parts list includes the following items:

Monkey wrench
Spark plug wrench
Screw driver
Oil can (accessory)
Tire repair outfit (accessory)
Pump clips, per pair
Tire pump
Chain repair tool (accessory)
Open end wrench 41/64, 3/8, 5/16
Open end wrench 45/64, 29/64
Open end wrench 49/64, 37/64
Double end socket wrench (accessory)
Double end socket wrench pin (accessory)
Pliers
Automatic oiler pump test plug (accessory)
Tool roll
Automatic oiler cam adjusting screw wrench
Valve sleeve and head adjusting cone wrench
Valve tappet screw wrench
Cylinder stud nut wrench (accessory)
Cylinder head stud nut wrench
Cylinder stud nut wrench handle
Alemite grease gun
Alemite grease gun hose

Of course, having a list in the parts book doesn't mean that all of the above would have been supplied with the motorcycle. I've never seen even a photo of an original 101 Scout tool roll with tools; if you find one, please share it with us!

dkgoz

...there was a discussion on the AMCA site about the tools included in the tool kit for a 1924 Scout, but the discussion also included a picture of a page from the 1930 accessory catalog, pictures of a 1924 tool roll which is very similar to Matthias' tool roll, and more:

https://forum.antiquemotorcycle.org/bboard/forum/technical-discussions-indian/scout/283147-proper-tool-kit-items-for-a-24-scout