Jane, first of all find the page in the Rohloff manual where they tell you which tools to carry, or at least list the sizes of the fasteners.
Basically my bike requires, including the Rohloff and cranks:
2, 2.5, 3, 4, 5, 6 and 8mm Allen (hex) keys or bits (see below)
T20 Torx key or bit (see below)
8 and 10mm open spanners or sockets, the 8mm a Rohloff requirement when a cable on the EXT box breaks
Tyre Pressure Gauge -- I like the BBB electronic oval one in black, but Park sells the same thing in blue
Rohloff's sprocket key, which I keep with the bike even though I don't expect to use it
Glueless tube patches from Topeak (like them) or Park (widely available) -- the size of a stamp
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I don't carry chain tools because my chain has quicklinks and is anyway enclosed and trouble-free. I don't carry a spare tube because I went nine years without a flat and expect as soon as I fix a current slow leak to go another nine years without a flat. My German all-in-one toolkit, which is hardly bigger than a keychain charm, has tyre levers but I've never used them on my own bike on the road (I know they work because I used them on other people's bikes a few times).
I don't see why you should carry separate hex spanners or even a tool with a separate arm for each hex spanner. You can get tools with bits, which store the bits inside, which saves the weight of the many arms. The Topeak Tool Bar I use, made in Germany, weighs only 68 gr:
The Topeak Tool Bar I use: light, small, wonderful, currently a huge bargain at Rose Bikes
https://www.rosebikes.de/artikel/topeak-toolbar/aid:23224Something similar, with a ratchet, less likely to be lost than my miniature toolkit because it is so much larger:
Topeak Ratchet Rocket Lite, about twenty quid
SKS makes good tools; I have a good deal of SKS professional bike gear and it is all of the best possible everlasting quality, and much better priced than the boutique rubbish which is nowhere near the SKS engineering standard.
http://www.sks-germany.com/en/products/bit-worx/SKS (above) and Knog both make interesting tools of the more familiar style. I once tried to buy one of these Knogs but couldn't find one of the top model (below); it's very compact and complete (except for the T20, which most multitools lack):
Or you can buy (try Banggood.com) a rubber holder for screwdriver bits (it's a strip of rubber with holes in it, less than a quid post-free) plus a small ratchet socket and bit kit at a hardware store or Lidl (mine was 20 Euro for the Faithful brand set), and put the bits you want in the rubber holder and elastic-band the small ratchet spanner to it with the elastic that holds your tyre levers to the other side. The small ratchet kit I have has an 8mm ring spanner on the end of the ratchet handle, normally used for storing the 8m Allan bit, so I'm set up to change Rohloff gears if I break a cable. This is the set I bought locally in Ireland, so it has European distribution:
VIDEO
https://www.youtube.com/watch?v=ir537JJYlIEMost bikes, even custom ones with tubed-through, threaded holes for every fastener, have at least one or two nuts, for holding on the lamp through the top of the fork, and the mudguard through the chain stay brace. Usually these nuts are 10mm. So you need open flat or ring (check there is space!) spanners for these nuts. Draper makes, or used to make, a motor-trade-special small spanner called a "brake spanner", open format, 8x10mm, strong enough because forged rather than stamped but still flat and lightweight. The standard 8x10mm spanner you can buy at any motor factor is also called a "brake spanner" or a "bleeding spanner" (honest!) but has high sides for fat nuts that you might want ground down for weight saving on a bike -- the thing is, if you cannot find the attractively lightweight Draper, this specialist 8x10 spanner is available from a back street motor factor as near as your yellow pages.
The Torx bit or spanner you buy must be the best because if you strip the sockets on the bolts, the whole gearbox will have to go back to the factory to be fixed. SJS sells Rohloff's own Torx T20 spanner. I have a bit instead (best German quality made by Witte, special-ordered for me by an agreeable hardware merchant, ten euro for three, so that I can have one on each of my bikes). Never used it in ten years, but if you're on tour away from civilization, you don't want a third-world mechanic's cheap steel bit to wreck your Rohloff T20s, so you'd better have at least a small T20 bit of the best quality to put in his hand.
