I use an Acorn tool roll with full sized tools everything from tire irons to cone wrenches, full allen wrenches and 8mm, 9mm, 10mm box and open end wrenches. 2 tubes, patches, tire irons, dollar bill. Screwdriver.
Changed my Crank bolts to 8mm bolts, now have a short piece of 8mm allen wrench that I use with my 8mm box end wrench.
about the only thing I cannot do is swap the bottom bracket or remove the cassette.
IMG_20170407_174826212 by Bwilli88, on Flickr