Joined: Aug 2010
Posts: 12,717
Likes: 2,104
From: Madison, WI
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
I like an older Alien 2 multi-tool. I think they still make them.
In addition to that I keep a small minimalist 3mm to 6mm allen wrench multi-tool with two screwdrivers in a pocket where it is handy for minor adjustments. All other tools are heavy and therefore in the bottom of a pannier.
I do not recall if that Thorn uses a Rohloff or a derailleur/cassette drive train. Thus, I am not making more specific suggestions other than to bring every tool that you might need and bring a second pump.
There are a lot of older postings on this forum for what to carry in a tool kit.