A month or so ago I ran some basic maintenance classes for a group of local cyclists, and one of the first things I taught was how to fix a puncture. Rather than use my good kit, I bought a couple of inner tubes and a couple of puncture kits from Poundland. Amazingly the kit included a lightweight spanner and some very stumpy Allen keys (and even some spare valve rubber for old Wood's valves!) - an jndicator crayon, chalk, a grater for the chalk, some sandpaper, and the glue and feather edge patches.......and the patches were very good. The group achieved 100 % air tight repairs.