The G-Works Gas Saver Plus is a handy little device for utilising cheap cartridges of butane, or gathering together the contents of almost empty canisters into one. Though simple to use, extreme care must be taken nonetheless.
Two Victorinox models provide good options in a modest 84mm frame. Unburdened by unnecessary function, the single-layer Bantam is the simplest while the two-layer Cadet offers just a few more tools. Both models come with attractive alox scales and weigh very little.
Many of us will have managed to fit in a few weeks of backpacking this year and some gear might have been having a rough time of it. Beside cleaning, re-proofing and condition checking, think about including an inspection of the O-rings fitted to gas and multi-fuel stoves.